Need advice about a man - mature users please

Okay so this is long story short.I have a friend who claims to be completely straight. We've been friends for about a year and a half now.First time we hung out when him and I got drunk and he gave me a lap dance in the nude, called me out on trying to sleep with him but then all he said about it was okay, and showed me his penis. Then at the end of the night I sucked him off. But he doesn't remember any of this he says cause he was so drunk.We have jacked off in the same room. One time I was taking a shower and asked if he wanted to join, he did. We scrubbed each other down but that was it. We were at a hotel. Then he spilt alcohol on my bed, just a little bit though but insisted I sleep in his bed, both of us were naked as we didn't see the point in clothes that night lol. But nothing happened, just slept naked in the same bed.Now the other night we were talking about a threesome. He brought it up and wants to do it with me him and another woman. He won't let me suck him off solo because it's "gay" but when it comes to a three some he says it's not gay cause a girl is involved and he'd make out with me, jack me off, let me suck him, let me rim him, and possibly fuck me. As long as he don't suck dick or get fucked he doesn't care because to him in a threesome it's still straight.I'm confused. I don't get it. I think he's not wanting to admit he's bi and trying to find ways of rationalize it in his mind. I can't do anything solo I've been trying for a year but he's constantly said he wants me to suck him off, he just doesn't know when.Then when we were sending pics to the girls one wanted a picture of his balls, he made me get under him and take it for him. One wanted a picture of his asshole and he made me get under him and take that one too.Someone tell me what the hell is going on.