I am a strait male and my girlfeind of 4 years told me she wants to see me have sex with another man and went into detail about it. she said she would just like to watch and not be involved, is she telling me she is bi curious in a backward way?

You said that she wanted to have a 3 way (fmf) with you. I think that this question is just an extension of the 3 way. Sounds like your g/f is pretty outgoing. Personally I couldn't do anything with another man but the fmf 3 way would get a green light from me. Enjoy her sexiness.

It sounds to me that she is telling you how it turns her on to see you be with another man. It doesnt have to be any more complicated than that. The only questions are if you are keen or not, and if it will impact your relationship.

I think you should go for it ---

Um, how does that make her bi? Just because you have sex with someone of the same gender is doens't mean you bi. Are you bi?

She has also mentioned in the past she would love to have a 3some with a girl but only let the girl go down on her but would not return the favor?

Wow... You are a lucky guy to have her!

You have an INCREDIBLY sexy and uninhibited girlfriend - I wish my WIFE could shed HER inhibitions and ALLOW herself to actually EXPERIENCE what we're already fantasizing ( and "simulating" using her dildo ! ) - even though the fantasies ( and "simulations" ) turn her ON she's having trouble getting past her inhibitions enough to TRY it ! It sure doesn't mean SHE'S "bi" ( although she COULD be ) - it just sounds like it turns her ON - as it does a LOT of women ! I'd prefer MY wife to be "involved" but I would SETTLE for it if she would "just like to watch". ( I really doubt she'd be ABLE to "just watch" - as turned on as she gets during the "simulations" I think she'd probably decide she would WANT to be "involved" ! ) Good luck - it sounds like an INCREDIBLE experience - one I hope to engage in MYSELF in the not too distant future !