i want an outside opinion on my situation

okay so this guy and i have been talking for almost 2 months, but things became serious about 1 month ago. for the first month it was just talking, flirting and a little bit of dicussing kissing and stuff but nothing serious. one night during the first month, we stayed up until 3am talking about random stuff about our lives, opinions and just existing in each others prescense with plenty of cuddling. then he kind of ended things? well he let me know that he thinks he likes this other girl we are both friends with and he doesnt know what to do in the situation he is in. then we continued talking, until one weekend during the second month where we went on this camp with a bunch of other people. where for the 2 nights we were together, we made out for like 3-4 hours each night and did a decent amount of touching and stuff. there was 2 other people in the room, but were sleeping most of the time. after the weekend he told me that he wanted to try things with this other girl and he was really sorry about kind of leading me on these past few days and he understands if i would be super pissed. i told him that i was kind of angry but more dissapointed because he knew that i like him and i know that he likes me so it was kinda of fucked for him to put me through this. (i've liked him for 2 years by the way) but anyway so whatever that happened, but then there was a house party that same week, where i saw him and the other girl kiss, and she admitted to liking him. this is where it gets slightly crazy. he asked his other friends prior that if things didnt go well with the girl, would it be okay to have done stuff with me. to which they said no and that it was fucked to do that (i wouldn't have minded which is prob bad to say but whatever). but he told me, that when this happened he didnt get bricked whatsoever, until later in the night where they were sitting on the couch with some other friends and i came and joined and my hand grasped his knee and he told me that he got bricked from that. not from kissing this girl, but from me touching his knee. he told me that he wanted to deescalate things with this girl and then see what happens in the term break. (never said anything about doing stuff with me again, but it was implied) he told me this on the sunday night (party was sat night). then on wednesday afternoon, we had a rehearsal from 2:30-4:30 and we were hanging out afterwards in the changing room. we then started making out and i stayed for an extra hour and missed multiple busses i was meant to catch. everything has been fine since, we hung out yesterday alone for the first time outside of school and it was great. he came to my house, we talked, kissed a little and then he was on his way. everything is looking up but i don't know how to feel. positive i guess? but then at the same time i feel bad for the girl becasue she is one of my best friends and all and i know she would be happy for me but i also dont know what to do. i want an outside opinion so someone can let me know their thoughts and opinions, im sorry this was so long but ty for reading. (BTW he is closeted so this makes it even harder [heh, harder funny joke whatever kms]) also i didnt proof read so my bad for timeline errors or spelling mistakes