Healthy Sex Support Group
This community is dedicated to an open discussion about healthy sex and sharing thoughts and feelings about sexuality and improving one's sex life. Most active adults desire to have an active and fulfilling sex life, both for themselves and also their partner. Here we discuss common sexual challenges faced by both men and women.

Will this affect your relationship long term as you can’t turn back
You state that you don't "generally desire it" and the fact that you posted here indicate to me that this is probably not a good idea.
I understand that you want to keep your BF happy, but does have no have an obligation to keep you happy also? Will having 3some make you happy or will it create issues for you? Are you comfortable at the thought of your BF making love to another woman? And if you won't allow your BF to be intimate with the other woman, are you comfortable "performing" for your BF with another woman?
Because if you don't really have a desire for intimacy with another woman, you are essentially putting on a little show at your BF's request.
Another consideration - how willing is your BF to indulge your little fantasies, especially those he doesn't generally desire to engage in?