Bestfriend/lover?

LeAnna • In love with my soulmate ✨
Ugh..
Okay. 
My (newly) bestfriend is bi, and I'm bi. We both know that about each other.. 
A few nights ago we went to the club with our boyfriends, and her boyfriend told her to kiss me, but she thought he was just saying that because he was drunk (he's 100% against her with another girl while they're together). 
She said she would have kissed me if she had known he was serious. 
On the other hand, my boyfriend is okay with me being with another girl.
I really do like her a lot, but I don't know what I should do about it.. 
Help!