The individual jiva-soul's relationship with Krsna is naturally a "two-way" personal partnership of loving exchanges and service based on reciprocal dealings and voluntary cooperation.

Pure devotional service is not possible unless these personal qualities are there in one's relationship with Krsna.

Krsna gives the devotees (individual jiva-souls) their free will for the purpose of allowing voluntarily contributing participation in a "two-way" relationship with Krsna, with an unlimited expanding variety of loving exchanges between Kṛṣṇa and His devotees. 

Such loving exchanges can never exist with only "one" making all the decisions, not even if it is Krsna, there must be always be two-way exchange with God (Krsna) otherwise "love" can never exist!

Srila Prabhupāda – "Love means a relationship between "two-persons," then there is exchange, then there is love. I must deal with you open-hearted, you must deal with me open-hearted, then there is love. So if you want to love Kṛṣṇa, God, then these things must be there." (Aug 9, 1976, Tehran)

Love can only exist in a "two-way" exchange of intimate expressions. Only a "two-sided" cooperation expands one's unique individual voluntary contributions presented to Krsna as personal offerings.

On the Vaikuntha planets and Goloka Vrindavana, personal expressions of loving exchanges between Kṛṣṇa and His devotees can only be expressed and acted upon by having free will. 

Such freedom of expression is always encouraged by Krsna in His relationship with His devotees (the individual jiva-souls that add flavour, variety and mystery to their association.

This means the Kingdom of God (Krsna's abode)) is not a "one-sided" dominating impersonal stagnant domain devoid of personal unique offerings that will only deny personal contributions (offerings) to God (Krsna), meant to expand, enrich and forever flavour the relationship with Kṛṣṇa with unlimited variety.

As said above, love or service is not a "one-sided" affiliate of total supremacy or pre-eminence, it is rather an act of voluntary participation and personal unique contributions, only then can real love exist.

So, we must understand that genuine loving relations and service are based on voluntary reciprocal exchanges and contributions between two and not just one!

Loveless Impersonalism is excluding the voluntary act of self expression, or denying a two-way cooperative relationship with God. 

The individual jiva-souĺs have their choices too, even if that choice means rejecting Krsna. 

Free will only has meaning when the individual jiva-souls have a choice to express themselves in a "two-sided" voluntary way with, or without Krsna. This means the individual jiva-souls can reject Krsna if they choose, which in a sense proves that "free will" does truly exist.

Only then can genuine free will exist.

In other words, loving reciprocation is only possible in a "two-way" exchange between two individuals with each contributing to the relationship's expansion of nectarine mellows of service.

The word "reciprocation" only has meaning when there are two involved in a cooperative relationship. 

Reciprocation has no meaning with just one. For loving exchanges to exist and expand in a variety of services, there must be at least two involved in a cooperative spirit.    

Impersonalism is understood in this way, the puppeter has total control over his puppets by manipulating the strings that control their every actions, they only act accordingly to what the puppeter does with his strings, the puppets have no thoughts of their own or or have any sense of an individual existence.

Similarly, the individual jiva-souls are not Krsna's mindless emotionless puppets or drones like that. 

Those who think surrendering to Krsna in the impersonal way and become His puppets by only doing what He demands are dangerous mayavadis and are attempting to commit spiritual suicide.

Srila Prabhupada - "The impersonalist philosophy is "oneness," so how there be love with just one? Is it possible? Have you got any such experience that love means one? No. Love means two. There must be two, the lover and the beloved. Kṛṣṇa is already lover. He loves you so much that He's trying to get you back. That is Kṛṣṇa's attempt. "Please, My dear boy, or My dear friend, My dear servant." (SB, Canto 2 Ch 1 text 3, Paris, June 12, 1974)

The Kingdom of Kṛṣṇa is nothing like that, Kṛṣṇa only wants those devotees who think for themselves, and who voluntary choose to serve in their way to please Krsna.

Srila Prabhupada - "Free will means that you can act wrongly. That is free will. Unless there is chance of doing wrong or right, there is no question of free will. Where is free will then? If I act only one sided, that means I have no free will. Because we act sometimes wrongly, that means free will." (Philosophy Discussions, Rene Descartes)

Srila Prabhupada – "So everyone can know that independence means one can use it properly, one can misuse it. That is independence. If you make it one way only, that you cannot become fall down, that is not independence. That is force." (Mayapur, June 20, 1973)

Having "free will" is the eternal constitutional make up of every "marginal living entity (individual jiva-soul)," and is the foundation that begins all the jiva-soul's interactions with Krsna.

Srila Prabhupada - "If you have no free will, then you are a stone. The stone has no free will. You want to be stone? Then you must have free will!" (Aug 5, 1976, New Mayapur France)

Srila Prabhupada - "Love means you take and you give also. Suppose if you love somebody and you simply take from him, but you don't give. Oh, do you think it is very good? No, it is not good. That is not love, that is exploitation. If I go on simply taking from you, and don't offer you anything in return, that is simply exploitation." (Lecture BG, Ch 9 text 2-5, New York City, Nov 23, 1966)

Srila Prabhupada - "We have got the propensity to love. Love means somebody else. Love cannot be one or love cannot be executed only by one, there must be another one. I love somebody; somebody loves me, there must be lover, there must be beloved, and the transaction, then there is love." (SB, Canto 1 Ch 2 text 6, Delhi, Nov 12, 1973)

Srila Prabhupāda - "There is also form, just like this material body is compared with the dress. Now, just like in your present material form you have got hand; therefore your coat has got hand. You have got legs; therefore your pant has got legs. Therefore it is to be assumed that the spirit soul always has got form, and is expressed as hands, legs, heads, everything. The spirit soul is not formless; it has got form. But with our material eyes at the present, gross eyes, we cannot find it; therefore we say and foolishly believe it has no form." (Lecture BG, Ch 2 text 14, Mexico, Feb 14, 1975)

Devotee – "Is the original body of the spirit soul a human form?"

Srila Prabhupada – "Yes, human form, God is also human form. "Man is made after the shape of God." I think there is in the Bible. Is it not? So God is also like human form. Here you see Krsna, two hands, two legs."

Hari-sauri dasa – "How do we understand, then, that there are peacocks and flowers and trees in the spiritual world? Are these not eternal forms?"

Srila Prabhupada – [describing material form first]: "Yes, they are more covered, just like if you cover your body with blanket, the hands and legs are invisible. But you are not the blanket. So the trees and plants, they are more covered. They are not in full manifestation. The human form is the full manifestation of the soul."

Hari-sauri dasa - "They are covered in the spiritual world?"

Srila Prabhupada - "Not in the spiritual world. There that is voluntary. Some devotees want to serve Krsna as flower; so they become flower there. If I want that, to be a flower I shall lie down at the lotus feet of Krsna, then he become flower, voluntarily, and he can change his, from flower to human body. That is spiritual life. There is no restriction. If some devotee wants to serve Krsna as cow, he serves Krsna as cow, as calf, as flower, as plant, as water, as ground, field, or as father, as mother, as friend, as beloved, anything. It is inconceivable, yet a fact." (SB, Canto 6 Ch 1 text 1-4, Melb, Australia May 20, 1975)

The full potential and unique expression of the individual jiva-soul, is eternally a spiritual bodily form always active in Krsna's pastimes.

And no two individual jiva-souls (devotees) are the same, each have their unique characteristics 

The individual jiva-soul is not some impersonal formless spark dormant or inactive in Krsna's Bodily effulgence (the impersonal aspect of the brahmajyoti) as its full potential 

Srila Prabhupada – “The human form is the full manifestation of the jiva-soul.” (Melb, Australia May 20, 1975)

Srila Prabhupada - "The spirit soul is not formless; it has got form, the spirit soul always has form and is expressed as hands, legs, heads, everything. But with our material eyes at the present, our gross eyes, we cannot see these facts; therefore we foolishly believe the jiva-souls have no form." (Lecture BG, Ch 2 text 14, Mexico, Feb 14, 1975)

Devotee - "What is the form of the spiritual body. If the spirit soul is non-material, what is the form?"

Srila Prabhupāda - "There is spiritual bodily form, just like this material body is compared with the dress. Now, just like in your present material form you have got hand; therefore your coat has got hand. You have got legs; therefore your pant has got legs. Therefore it is to be assumed that the spirit soul always has got form, and is expressed as hands, legs, heads, everything. The spirit soul is not formless; it has got form. But with our material eyes at the present, gross eyes, we cannot find it; therefore we say and foolishly believe it has no form." (Lecture BG, Ch 2 text 14, Mexico, Feb 14, 1975)

Krsna allows the eternal individual jiva-souls (devotees) in the spiritual world to continually re-invent themselves by voluntarily serving in a capacity they choose by making their own unique contributions and offerings.

This allows diversity and an unlimited range of variegatedness in the devotee's personal service to Krsna that is forever expanding their progressive independent contributions in the Kingdom of God (Vaikuntha planets and Goloka-Vrindavana) infinitely expanding their voluntary participation, personal contributions and inspiration in an unlimited variety of unique ways serving and associating with Krsna in His never ending expanding blissful pastimes (lilas)

Krsna allows the individual jiva-souls (His devotees) to have their "free will" because He wants to see unique voluntary independent self expressions of voluntary love towards Him from His devotee's personal choices with their own unique thoughtful contributions on their own.

Krsna wants His devotees to voluntarily be personally creative in their independent offerings, friendship and service to Him.

In other words, Kṛṣṇa wants a "two-sided" open reciprocal cooperative contributing relationship of loving exchanges with His intimate devotees, where they can voluntarily express themselves as they choose, in their own unique way, as separate independent individuals from Krsna, yet simultaneously fully dependent on Him due to being His parts and parcels.

This means the devotees of Krsna should never surrender to a mindless puppetry “one-sided" dominating relationship, where the devotee is ordered what to think, and how to serve without being encouraged to think for themselves with their own unique personal voluntary contributions. 

Such a nonsense “one-sided” relationship is a loveless dictatorship and impersonalism that denies individual self expression!

Srila Prabhupada – “Love is reciprocal, voluntary, good exchange of feeling, then there is love, not achieved by force, no, Krsna does not want to become a lover like that, ‘You love me, otherwise I shall kill you!” (Washington DC July 8, 1976)

As said above, real love (service) is voluntary and can never exist on a “one-way" path because love can only exists when "two" are involved in voluntary reciprocal contributing loving exchanges.

Krsna allows free will (voluntary self-expression) so His devotees can experience their own unique individuality and make their own unique offerings (contributions) to Him in a way that forever expands loving exchanges and reciprocation in a "two-way" transition between Kṛṣṇa and the devotee which is never a "one-sided" non-contributing loveless dictatorship.

In this way, "free will" only eternally exists for Krsna's devotees because Krsna wants a "two-way" contributing open relationship with His devotees, therefore Krsna always encourages self expression and unique personal contributions from His dear devotees that make the relationship a "two-sided" exchange of loving emotions.

The relationship with Krsna must be this way because love can never be experienced with just one, there must two in an open "two-sided" reciprocal relationship of mutual returns and voluntary cooperation.^.