threesomes

Marisa
Ok so this is a weird question. But I am bi sexual but I love my boyfriend who recently asked for a threesome which I don't mind I would love to try it but my thing is how do you find a girl that is down with that. Like I can't get a single girl that would be one with it. I don't have many girlfriends and none of them are interested in it trust me I've asked so what do I do