Hey all, I'm looking for advice...

A year and a half ago I met a guy. He is hands-down the sexiest person I know. While he made it clear he didn't want to date, we have had sex and he frequently verbalizes how much he cares about me.

After knowing each other for a few months, he introduced me to a girl who is now one of my best friends. Seriously, she is so amazing... our friendship developed even faster than my friendship with him :) Turns out we are both bi, although I have never been with another girl before.

Both she and I always knew or suspected that the other had some kind of sexual relationship with our male friend. A few months ago, he and I got in a big fight, and I told her about it. We finally had a conversation about our mutual love for this guy, and it has turned into another bonding experience. However, I did tell her that he and I weren't having sex anymore.

Well, now she is away at school in another town and he and I are spending more time together. It's reigniting my lust for him, but at the same time I adore her and don't want to hurt her. And I've been daydreaming about being able to love both of them equally. she is bisexual, but I can't tell if she is attracted to me because of my own inexperience with other girls. Anyhow, sorry for the long post but if anybody has advice on how to approach this situation I would appreciate it. I don't know anyone in a polyamorous relationship, so I don't know if this can work or how to approach it at all. Thanks!