Bi the way

I'm starting to think my home girl who I've known for years is Bi. When we would go to clubs, she would drink and act a fool and start grabbing on me and some of our other friends and blame it on the alcohol once we check her on her behavior. Whenever she sees any homosexuals either on Tv or anywhere else for that fact, she always has something homophobic to say. She's always making comments on my butt and use to joke to my boyfriend about how I was hers first which he did not find funny. Recently, she started dating this dude and apparently he's been making comments about my body to her and when she told me I was thinking 'WTF y is he looking if he's with you, let alone telling u about it.' Anywho this has been going on for months. As of lately when I'm with her and he calls she'll tell me he'll say things like "Oh is she eating your coochie" when she tell him she's with me. She laughs about it and the comments are becoming more vulgar and frequent on his part. Now I see this guy on a regular but we don't talk because frankly I dont care for him much. I am extremely feminine and so is she when we hang out we go shopping and talk about dudes and other superficial girl stuff, so I dont think anything we do is remotely sexual or lesbian-ish.  I have told her on several occasions that I dont like to play around with that Gay/Bi stuff yet the statements keep coming. I feel like she's telling him something that I dont know because why else would he keep making lesbian comments about us when he doesnt even know me. Moreover, why wouldnt she nip that in the bud if she's so homophobic. My question is, How do I confront her without completely ruining our friendship since her and I dont have any other issues but that.