"Devoted to Spouse" Aspiration

I'd rather have this as a reward trait that I can buy with satisfaction points. Aspirations in this iteration are a series of goals, meant to be switched in and out of as needed, nothing life-defining. I wouldn't want my sims to be tied to a single aspiration for all their life just for them to stay faithful. There are devoted (for example) jungle explorers and nerd brains, too!