This one is for people pushing that unconditional love should be the norm in a relationship. But unconditional love can't exists in a couple

Each relationship is transactional in its basis. Indeed there is an exchange of values between friends, families and even lover. The difference is, love make each people desir the best interest of the other without a strict need for pure equality (50/50 is ineffective in this sense). I can borrow money from a friend, and they won't charge me any percentage for it when I give it back

A relationship is also a contract because there are still expectations even if they are not said. For instance, I don't think that many people will still love their partner if they decide to change their gender since it's an unsaid requirement for the couple to work

Of course the main goal of a couple is to be united and overcome obstacles but only if each partner respect it's role. Of course the requirement of the relationship should be discussed and updated during the lifetime of the relationship

What are you though ? Is there a part of the reality that I missed about unconditional love ?

EDIT: To explain it shortly:

Relationship = love + transaction

Transaction = values + conditions