I'm going to make a deal out of my fiance to exchange a Christmas gift he didn't like so he'll get something he does like and will use
Isn't that a better idea? To give someone a gift that they can use?
I want him to use it and I don't even know why I care so much about that. It's only right.
It's your partner's decision if he wants to exchange the gift you gave him. I'm sure he would want something that he can use and not waste that gift.
I'll get my mom to talk shit about me and my relationship to manipulate my fiance into doing what I want.
No manipulation needed for that. I know guys would want a useful gift. I know I would.