Most Helpful Opinions
If she and I had a casual relationship, and she asked me first, I would probably give her the go ahead. Heck maybe we could go out cruising together to find her a girl. But if it is a girlfriend, then she should not be having sex with anyone but me, regardless of sex.0
What Guys Said
I'd be upset we hadn't talked about it first.
Also to be clear, I'm talking cis-women. I would have a problem with her having sex with a woman with a penis, if I'm using the right terminology there.0
No, not really. If that's what she prefers, then I'd hope that she'd tell me right away. Needless to say, I'd be moving on.0
Hmmm honestly? nope.
But. Have you ever tried... involving the guy in the bed with another girl around? Everyone happy, you know?0
I wouldn't be mad if it happened only occasionally.0
Been there done that never again she start falling in love with the girl in forgot about me :(0
Are you stupid?
It'll be an affair no matter who you fuck0
I'd be mad.0
Man i love bi girls!0
Cheating is cheating0
She'd be gone0
Most Helpful Opinions
It would be enough because gender doesn't matter. Guy or girl, gay or lesbian, in a committed relationship that you're supposed to be faithful and loyal in, fucking around with ANY gender is classified as "cheating" thus potentially ending any relationship.
My girlfriend went out with her girlfriends a few months ago for a wedding party and one of her friends got REALLY drunk. She then grabbed my girlfriend and forcefully made her make out with her. It was no longer than 2 seconds, but those 2 seconds were enough to piss me off. I was mad about it for a few minutes but I got over it and told her it better not happen again. Whether her girlfriend or guy did this to her, my answer would not have changed.
I didn't really let it bother me as much because she had no control over having someone grab her like that and shockingly surprise her with some kissing so to me, that's understandable.
tldr; personally, if my girl messes around with another girl behind my back or tells me about it, it's cheating. period. If you want to be with a girl, go be with one, not a guy. If your'e bi, awesome, but no commit yourself to something you think will mess up your relationship.