I'd just like to point out that an alternate (and just one of many) perspective on sexual relations beyond those with your partner is: I love my partner's pies and I've even said there's no other pie I'd rather eat. One day, however, someone brought in a pie to the office and I decided to have a slice. Might my partner be hurt to find out that I liked this other pie as much as theirs? Maybe, but then I wouldn't marry someone who's so childish as to believe theirs is the only pie I'll ever want or even try. In the end I'm with them not because I'm a sellout for whomever has the best pie, but because I enjoy the whole process of baking it with my partner.
Hmm the food metaphor is a bit tedious at this point. Maybe I'm just bitter that I didn't get any pumpkin pie at Thanksgiving this year. And that's not a euphemism.