I apologize this might be a little bit long, but thanks so much for reading this even guys. i really appreciate it.
basically i've known him since first year uni, we're great friends, just we click really well and always have a great laugh. purely platonic though. New Year's Eve we agreed i would just go to his place (out of the city) and chill for once, his mom was home and i NEVER for a second thought something would happen, i've known him for about 3 years now. we got really close last few months of 2013, he was there for me through alot of bad stuff, i've cried to him and we can talk all day. like it was just a good fun friendship. never thought anything would happen with us.
night of New Year's Eve, his mom cooked for us and we had beer and wine and played video games, in retrospect he was sort of making a move on me because he kept letting me or making me lean against him and tried to cuddle with me, anyways, out of nowhere he kissed me. and i pulled back freaking out saying "omg we can't do this we're good friends". but i gave in eventually and we just kissed. he KNOWS i like someone else and he was even rooting for me and the other guy, he told me after the kiss "i'm a simple guy, i don't want a relationship" (he just got out of one). we went to the bar, he kissed me at midnight, i got completely wasted. he took me back to his place and carried me bridal style to my bed, laid beside me & waited til i sobered up because he said he wasn't gonna take advantage of me. we just cuddled and talked before we finally slept together, sex was great.
after that things went south, he got awkward next morning. we barely messaged, it's like we did a complete 180 from where we were. i thought he didn't care anymore til word got to him somehow and he called me, FLIPPING OUT, i've never seen him mad in the years i've known him. and he wanted ot make sure things were fixed with me before he left for two weeks. when i asked "was the sex one time?" because we both said we should do it again, he said "i don't know, i mean, there's a girl in my class i really like" when class just started literally the day before. so i knew more likely than not this was a lie because i knew he didn't want a relationship, i just know when he's lying. i feel like he only said that to make sure I don't like him when he knows plainly i'm into this other guy. right after sleeping together he got all weird and was like "can you leave me alone" like he was acting so out of character, it just threw me off.
long story short, we just stopped talking, i've tried to reach out to him twice to no responses. he literally just shut me out of his life. things did not get better after that call, he got so overly sensitive about everything. we haven't talked for months (stopped in end of January) til i saw him again in my summer school class by complete chance this month. i was so thrown off b/c while i never really got over what happened, i miss him as a friend ALOT, i accepted it. and seeing him again rattled me alot. but it's so weird 'cause he makes such a point of ignoring me, literally running out of class soon as it ends, bag half open laptop in hand and jacket half undone. i know him enough to know when he's trying really hard to ignore me. just sitting there and staring straight ahead.
i don't have romantic feelings for him, but we had a great friendship and we were SO close, it was just all great and stuff. it's kinda hard to believe he'd be friends with me for three years, date another girl, all that only to sleep with me for one night. some of my friends said it's just 'cause he likes me and he knows i like someone else, so he shut me out for himself to move on. but even that doesn't seem to make sense. i thought for a long time it's 'cause he thinks i like him. which makes no sense either since he knows i'm into another guy. so i don't know what happened here.
any insights ? if you read this far, thank you so so so much.