This is exactly it.
I don't buy someone lunch with an implicit expectation that they'll buy me lunch in the future. That's tacky and gross. I buy lunch because I wanted to buy them lunch, and if they decide to buy me lunch, I happily accept.
I don't buy someone lunch with an implicit expectation that they'll buy me lunch in the future. That's tacky and gross. I buy lunch because I wanted to buy them lunch, and if they decide to buy me lunch, I happily accept.
If they say or act as if there's something expected? I'm returning that "gift". That's a bargaining chip, not a gift.