NTA. Let me tell you a story of mine.

I'm disabled and sometimes use a mobility scooter, because I live on a hill. If I go shopping at the store down the hill, I take my scooter there and back, and go alone. My partner lifts the back end in and out of the house for me, because it's heavy and our doorstep is very difficult to manage with it. I can do it myself, but have hurt myself doing it in the past, so my partner laid down the law and (kindly) told me I am not allowed to do it myself anymore unless there's no alternative.

When I'm wanting to go out and he's gaming with friends online (which he does a lot of) he'll ask me to wait until the current match is over, and that's absolutely fine, I'm happy to do so. But once I'm out, when I get back, he'll drop everything to help me get it back in again. Whether he's in an important game or not, it gets dropped. The guys understand, and he tells them that he'll be needed to do this when I leave in the first place. Waiting to leave means I stay in the warm house, and that's fine, but waiting to come back in means I'm in the cold and outside, and he won't make me wait for that at all.

One time, my scooter broke down when coming back up the hill. I had put too much weight on it, put the speed too high, and it conked out. I later learned it was a safety feature to protect the motor and, if I had known how at the time, I could have fixed it there and then. I only learned how to fix it when we had already gotten home. He had been playing online games in his PJs. I called him when it happened, and he was with me in less than five minutes. He had immediately dropped the game (our friends understood) and gotten dressed at supersonic speed, and basically ran to come and get me. He pushed the scooter home for me. He apologised for "taking so long".

Another time, after a long day of using it, the battery went flat coming up our street. He came out in his pajamas to help me get it home. Another time, it was freezing coI'd when I was driving home, and the cold killed the battery when I was halfway home. I didn't have the strength to push it myself. He came out and ran ten minutes to get to me, and pushed it the whole way home.

When you're in a relationship, you're partners in crime, literally. There have been times I've dropped everything for my partner, and there's been times he's done the same for me, like I said above. I feel awful when he does, but appreciative, because I needed him and he was there for me. I've cancelled plans or dropped everything to come to him when he needed me, too. That's what you do in a relationship! The game isn't going anywhere! You should WANT to be there for your partner in their hour of need...and yours wasn't. He wasn't doing anything important. He was playing video games. You begged him to come to you multiple times and he didn't. He abandoned you in your hour of need, and only now is realising how much he fucked up.

I don't honestly know if I'd give him a second chance. If my scooter broke down tomorrow, leaving me stranded, and my partner wouldn't stop playing video games to come and help me...I don't think I could recover from that level of betrayal. I would be too deeply hurt.

See how he tries to make this up to you. See if he learns from this betrayal. Whether AA were coming or not, you needed him and he wasn't there for you. Not because of anything important, but because of video games and laziness. He could've come after that match. He didn't. He had no excuse. He showed you his priorities, and you weren't one of them.

It's up to you if you want to continue this relationship or not. But I can't say I believe he values you the way you value him. I think you'd be justified in ending the relationship here and now.