How donyou know when you should break up

Me and my boyfriend of two years have recently been going through some stuff... it’s honestly hard to explain. Basically we both want and need different things. I’m super clingy and almost always need attention but he hardly ever needs it and would rather play video games with his friends. For the last few weeks our vibes have just been off and even more so throughout the last few days. I finally got sick of it and confronted him about it and we had a long discussion about weather or not we should be together. I love him a lot and I don’t want to just throw away everything we’ve had for the last two years. He is my first everything. First *real* boyfriend, first kiss, first love, and we even lost our virginity to each other (not that that matters or has anything to do with this). Things used to be so good and I honestly don’t know what happened. He says we would still be friends and not a lot would change but as far as I’ve seen that never works out. I wouldn’t be able to cuddle or kiss him anymore. I wouldn’t be able to tell him I loved him. So much would change. Before he went to bed tonight we agreed that this was the last time we were going to have one of those serious relationship discussions (at least for a while) and told each other what we can both work on, saying if this doesn’t work then maybe we shouldn’t be together... which I know is the right thing to do it just scares me. I don’t want to lose him. Idk what my point to this is. Maybe I’m asking for advice... maybe I’m just ranting. But anything (besides negativity) would help.