Let me pit a different slant on this topic. I am bisexual and my partner is a woman.
I cheated on her a couple of times and yes the rush of adrenaline was unreal and it filled a need in me for m2m sex. Exploring and experiencing with another man is sooo good. It also helped me fulfill a need to be fucked that i had harboured for many years. The first expisode was with condoms but i found the lack of skin on skin made it very disappointing and i wanted it raw. So the second time i did get fucked bareback and it was just completely different and so much more fulfilling.
My partner found out. Oh dear you might think, but what actually transpired was that she believes my need for sexual experiences with men is important and that if i don't do it i am not being true to myself.
Soooo i have a licence to play the only rule being that i have to keep her updated on what I am doing. The truth is that it has added to our sex lives as she gets very turned on when i describe my encounters and especially so when i describe the feeling of a cock entering my arse, pounding into me and breeding me.