We were lightheartedly talking about our lives, and she said "when you end up cheating on me, it would be with a guy". I'm not sure where to go with this - she's not wrong at all, since she and I don't see any reason to cheat on her with someone with the same anatomy. The only reason she'd bone someone else would be because I don't satisfy her myself when I'm swinging too far to the gay side to hold an erection for her (vibrator is always on the table, so she still gets off but there's no penetrative orgasms). She's offered butt play but I'm not after her butt, I fantasize about dicks. I left it as "I can't argue with your logic". What would you do in this situation?