HELP!! does she wanna hook up with me??

So my boyfriend and I have been hanging with this new lil group and there's another couple we really get along with, and I'm REALLY attracted to the girl. I'm (secretly) bisexual but never done anything with a girl.... Our boyfriends were talking about how hot it would be if she and I hooked up and it was funny and whatever but then later I had this conversation with her 😱 do you think she's tryna do something?? If I want to is that bad or cheating?? My boyfriend always talks about it like he wants it to happen. Advice???