Feeling so guilty., needing to vent

I’m not sure where to start. Me (30) and my ex (36) got back together a few weeks ago and I think I made a mistake. Since getting back together, he has played games such as sending and unsending messages, leaving me on read all night due to being upset but refusing to communicate. I know he is going through a lot because he just lost his career but I feel like I’m losing myself trying to stay/be supportive when I’m hurt. The other day I went to the gym after work due to a stressful day and discussed told him my plans. He was understanding and everything. I got back home and he accused me of cheating on him instantly and said I wasn’t at the gym. Even though I clearly showed him when I checked into the gym. He drank too much and took it out on me that night. He slept on the couch and ended up breaking all the new plants we bought. I went home because I didn’t want to sleep alone. He then followed me home and yelled at me in my room calling me all the names. I have a problem with leaving (distancing myself) when I’m triggered and I know it’s something I need to work on. He said I should have came to check on him instead of leaving and he is probably right. He also lied the other night after buying chew (which he knows I do not care at all) and I just asked him about a can on the counter because he assured me he was stopping (his idea) he went as far and taking some out of the can and lying about it. Which was odd because I couldn’t care less about a can of chew. I do love him, he watched the shows I like, he makes sure I’m taken care of but I’m just confused with how he lost so much respect for me. If you made it this far. Thank you. Any insight is welcomed.