Marx:
"The existence of what I truly love is felt by me as a necessity, as a
need, without which my essence cannot be fulfilled, satisfied, complete."

If you suppose man to be man and his relationship to the world to be a human one, then you can only exchange love for love, trust for trust, etc. If you wish to appreciate art, then you must be a man with some artistic education; if you wish to exercise an influence on other men, you must be a man who has a really stimulating and encouraging effect on other men. Each of your relationships to man - and to nature - must be a definite expression of your real individual life that corresponds to the object of your will. If you love without arousing reciprocal love, that is, if your love does not as such produce love in return, if through the manifestation of yourself as a loving person you do not succeed in making yourself a beloved person, then your love is impotent and a misfortune...
pp 119-120 Karl Marx Selected Writings ed David McLellan

Assume man to be man and his relationship to the world to be a human one: then you can exchange love only for love, trust for trust, etc. If you enjoy art, you must be an artistically-cultivated person; if you want to exercise influence over other people, you must be a person with a stimulating and encouraging effect on other people. Every one of your relations to man and to nature must be a specific expression, corresponding to the object of your will, of your real individual life. If you love without evoking love in return - that is, if your loving as loving does not produce reciprocal love; if through a living expression of yourself as a loving person you do not make yourself a loving person, then your love is impotent - a misfortune.
p 140 - Economic and Philosophic Manuscripts of 1844 Karl Marx translated by Martin Milligan.

context(ually) speaking [to you].

Suppose we had produced things as human beings: in his production each of us would have twice affirmed himself and the other. (1) In my production I would have objectified my individuality and its particularity, and in the course of the activity I would have enjoyed an individual life; in viewing the object I would have experienced the individual joy of knowing my personality as an objective, sensuously perceptible, and indubitable power. (2) In your satisfaction and your use of my product I would have had the direct and conscious satisfaction that my work satisfied a human need, that it objectified human nature, and that it created an object appropriate to the need of another human being. (3) I would have been the mediator between you and the species and you would have experienced me as a reintegration of you own nature and a necessary part of your self; I would have been affirmed in your thought as well as your love. (4) In my individual life I would have directly created your life; in my individual activity I would have immediately confirmed and realized my true human and social nature.
Our productions would be so many mirrors reflecting our nature.
What happens so far as I am concerned would also apply to you.

Karl Marx. Notes of 1844.