If it’s mutually decided then it’s clearly not deception, and whatever floats your boat, tbh.
Your other responses referring to evolutionary psychology, the chance of altruistic friendship etc. etc.: there is a difference between the evolutionary fact that your inclination to be friends with someone will be based on ultimately selfish goals, and being selfish yourself. The psychological make-up we have is a brute fact of existence and we need to take it into account. But selfish genes do not mean that the concept of human unselfishness is a busted flush.
If it’s mutually decided then it’s clearly not deception, and whatever floats your boat, tbh.
Your other responses referring to evolutionary psychology, the chance of altruistic friendship etc. etc.: there is a difference between the evolutionary fact that your inclination to be friends with someone will be based on ultimately selfish goals, and being selfish yourself. The psychological make-up we have is a brute fact of existence and we need to take it into account. But selfish genes do not mean that the concept of human unselfishness is a busted flush.