eat one for the team
When a significant other's weight can be questionable, the need to help eat their food so that they won't.
Guy 1: Dude, I thought you didn't like apple pie?
Guy 2: I don't, but Jen was getting it regardless so I had to eat one for the team.
Guy 2: I don't, but Jen was getting it regardless so I had to eat one for the team.