Girls, my girlfriend suggested a threesome with her EX, should I say yes or is this crazy?

[Anonymous]

My girl and I have been wanting to try a threesome with a guy. We did this with a girl early on and she wants to try it with a guy now. Fair is fair. We have tried hook up apps and sights and have not had too much luck with lots of flakes and sketchy people so it has been on the back burner.
Until last week that is, when she ran into her ex by chance at the bank. They broke up on fairly good terms and just grew apart. She told me she had this crazy idea that he could be perfect for our threesome. I thought she was joking but she told me that their relationship was mostly just sexual anyway with no real substance but he was a good guy who played safe, would honor boundaries and was FANTASTIC in bed and had a great body. There was also no chance of romantic attraction between them and she says that was reinforced by their meeting.
He identifies as straight but would be willing to fuck a guy and have a guy go down on him and has before. I don't really have a problem with that since anything with a guy would be new to me and I'd rather have someone experienced take the lead.
It's just the WHO part that concerns me. I'd be sucking her ex and getting fucked by him. In an odd way, it's a turn on because we'd be sharing an experience that she says was amazing for her.
I asked if she'd see me as less of a man or be less attracted and she said my willingness to try this and push my boundaries made me more attractive to her.

[lanadelrey25]

she doesn't love you obviously she just wants her ex back

[Neko911]

So he's bisexual, and you are as well. But yeah this just sounds like a shitty idea all around

[Hitchhiker42]

Hey, let’s not label other people’s sexualities. Just because someone engages in sex with the same gender doesn’t mean it’s part of their orientation. People are allowed to experiment. This isn’t supposed to be a hate comment by the way, I’m just trying to educate :)

[Neko911]

@Hitchhiker42 he's bi though

[Asker]

@Hitchhiker42 I really don't care for labels either. I still haven't done anything with a guy. I might not even LIKE It. I'm open to trying though. Even so, it isn't this 50/50 thing where I could be equally attracted to either gender. I am not.

[Anonymous]

It sounds hot to me. If she was doing this as a ploy to get with her ex, you not going through with it wouldn’t change her feelings. If it were me I’d do it.