venting out, advice?

i'm a 27 gay male in socal, last year i was seeing an autistic man, it was a completely different experience in my life dating someone with a mild form of autism. i had a genuine interest in the guy, but there were things that didn't quite do it for me. i made excuse for some of his actions stating that his autism prevented him from recognizing the social norms of "dating" or i would blame my own expectation on the matter. he had roommates i never met because he was not comfortable. time spent with him alone was so different from time spent with him in public, though he initially was very sweet. when he call things off this November i said i was too "bottomy" and that he was already seeing someone else. i was upset to hear he was seeing someone else when i thought he and i were still doing our thing. i guess in his mind we stop being a couple or "dating" in july during or trip to a different city. recently i've been bothered by the whole thing; the way he behave, the way i ignore it or made excuses for him, the way he ended things. we used to be friends on social media and i noticed pics of him and his new guy being perfectly happy, i have removed him from all my social media to respect his decision and his choice of man. i'm bother by it and i worse part is he and i have tickets for chochella since we bought them in advance and it's a whole camp thing. i have offer to buy him out but he still wants to go since it would be his first time. i don't know if i am ready to hang with him in a platonic manner given our history. i also don't want drama with his man. why are gay men so weird?