yay for sexual adventures

I have these two friends that are in an open relationship, and both are very much Sex positive people (as am I). All of us are queer, and I'm friends with them both. It's come up before that I'm attracted to one of them, and that they're both attracted to me and it turns out that they've both fantasised about having a threesome with me. I'm totally down for it except for that one of them doesn't know that I might be pregnant right now....