what should I do about my online friend of 4 years that blocked me?

It’s really stupid I know, but my online friend of 4 years blocked me. It doesn’t feel the same without him because I played with him almost every day on xbox. I was quite young when I first met him so it felt as I grew up around him. 3 months ago he blocked me because his girlfriend didn’t want us talking. I was really mad at the girl at first but now idk. If he really cared would he have only sent a one sentence message then block me right after? I really truly liked him as a friend. He was really kind.. his love language was gifting, we had the same humour that I genuinely don’t think I’ll meet someone like him again, our conversations during the night that lasted hours.. and he said he never liked anything new so I don’t really get why he’d do that to me. Anyways, I’ve been conflicted on if i should ask what to do, but it’s gotten to the point where I miss him more and more everyday. I’ve tried in the last 3 months to accept what has happened, but honestly I miss him and just want my bestfriend back. Should I message him even though I’m blocked? I personally think it’ll help me cope in a way even though he won’t see it. Or does anyone else have any ideas? If it also helps I feel we were more distant the last few times we played before he blocked me (like he was distracted from his gf or something while we were playing). Especially the conversations.. it felt really awkward.

I ALSO EDITED THIS A FEW TIMES!!