I think for a lot of guys hearing that there gf is bisexual makes them think that the relationship is going to turn into wild 3-somes with another girl, because a lot of guys have that fantasy. As a guy it was a fantasy of mine but since I have been married I could never see myself and my wife with another woman or even another man in a 3-some. Not something I would want to introduce into our relationship.
So in your situation it seems like you don't want it and you have no reason to give into your bf fantasy. If he likes it the 1st time, guaranteed he will be asking for it again and your jealousy will keep getting stronger and stronger each time it happens and I believe it will ruin the relationship because you will have no turst in him, that he wants you and not the other woman and will probably even make you question if he is with the other woman alone.
Make sure you are TOTALLY comfortable before you do that. I am also bi-sexual. I have been engaged for 4 years. I told my fiance about a year ago. Well I never really thought it was a big deal to tell him, since I never acted on it while I was with him. But he asked one day, and it didn't change his feelings towards me at all, even though at first he was weirded out. But like I said we have been engaged for 4 years, so there are no trust issues with us. We tell eachother everything. So when I did tell him, he was like ok, well do you want to be with another girl? And even though I am sexually attracted to other women, I couldn't imagine ever sharing him with one. I'm not a jealous person, but he is sacred to me, and so is our relationship. He said I have fulfilled everyone of his fantasies and having a threesome is NOT one of them, because he doesn't want to share me, but if I ever felt the urge, I could, but I would have to tell him first. So I think if your guy is like 'heck yeah' to the threesome idea, then his heart isn't all yours. Yes he may love you, but if he really really loved you, he wouldnt want to share you either.
Yes, I don't think your relationship is strong enough to handle this scenario. I'd not do it. good luck
I think both of you should just quit seeing each other untill you can make up your mind what and where you are going, it does not sound like either of you are reall in love or why would you both be wanting someone else? i think you are 18, that is not old enough to know just what you want out of life, so wait awhile luck jo
from your other post you say that you are trying to get your boyfriend to trust you again after you cheated on him awhile back.theres problems to begin with and introducing someone else into the realtionship when your already not comfortabe with the idea spells disaster.so i would say talk to your boyfriend and work on your relationship before you try anything.good luck to you x