Warning: Explicit Rant

So there's this guy right? Well we've been friends for about three years. I slept with him once and it was a casual thing right? Well he never said he wanted to be together. He acted like he didn't care and was extremely distant. Well after a full day/night of partying I got really freaked out at my friends place and tried to call him and he didn't answer. So I called our friend Carter (Morgan is staying with him) and was like hey can I crash at your place tonight? So I went over and Morgan was being an ass and went to sleep in carter's bed because Viv was passed out in his. Well Carter and I were watching a movie, having a glass of win, and just relaxing. Well he tried to kiss me and I told him no at first and then I felt really bad about it and let him kiss me. Well I almost slept with him. Now remember I was extremely fucked up, like so fucked up I called him Morgan like twice. Well the next day everything was fine. Carter made breakfast I smoked a cigarette with Morgan and he asked if I was fucked up when I came over and I'm like uh yeah I was really messed up and we bullshitted for a while until he left. Well I went home thinking everything was fine. Carter and I agreed not to say anything about what happened and to not let it affect our friendship. Well now Morgan's pissed and think I slept with Carter. He's so mad he deleted me off everything but snapchat. So I was talking to my best friend about it and she messaged him and asked if he was pissed at me. Well he called me a hardcore player and said that I set out to fuck with is feelings. I'm super pissed. That's not true at all. I made a mistake in a drug induced haze but that's it. He thinks it was something more. I don't know what to do because I actually really care about it. Any advice?