u/DEeybokds

I (27F) need to know if I’m in the wrong here.
I went out for a few hours yesterday with my mum and met my bf (25M) of four years, who was walking our dog (1M) afterwards.
I asked him what he’d been doing, if he’d made progress with some work he’d been doing and tried to make conversation, he told me he watched tv and did some cleaning.
When we got home the house was noticeably dirty so I asked which part he’d cleaned and he said ‘the Pokemon cards from your desk - I threw them all away’. I asked if he was joking, he said no. I ran upstairs and saw he’d thrown away all of the cards from the desk along with some half drunk cans of Pepsi.
An important note here is the day before this happened I’d actually managed to pull a card from perfect order that’s worth around £50 raw so I was really excited (especially because it’s been so hard to get Pokemon cards in the UK).
I was so upset that he’d gone into my office and just thrown away my things that I burst into tears and started asking him where they were. He kept telling me to calm down, it’s just ‘fucking cardboard’, that I was being ‘fucking mental’ and he wasn’t going to pay a penny back towards replacing them.
After crying and begging him to tell me where he put them, he said he’d put them outside. The bag had a literal layer of Pepsi at the bottom which the cards were floating in so all were destroyed, quite a few full art cards, EX’s and the SIR I’d just pulled.
I ran upstairs and called my brother (we collect them together and he was going to get the card graded for me) and I told him what happened as I was really upset.
After I got off the phone I went down to my bf to ask why he would do that, and he kept going to different rooms and wouldn’t talk to me as he said I was being insane for being so upset and said he couldn’t talk to me until I was being reasonable.
I tried to talk to him in the living room and he told me to leave (and granted, I didn’t, as I wanted to talk about what he did) and he got angry and threw me onto the floor.
He’s since told me that he wants to break up as I’m crazy and I need to apologise and change my behaviour before he can forgive me.
I also found out this morning that he took all the money from our joint account after the argument last night.
We spoke this morning and he says it would be stupid to break up a 4 year relationship over ‘a pokemon card’ but unless I change that’s what will happen.
I’m just at a loss. I feel like I didn’t do anything and he just keeps telling me how awful and crazy I am and how I need to say sorry but I just don’t see how this situation is my fault.
He hasn’t apologised for what he did, he says it was an accident and he was trying to clean to do something nice for me (but he didn’t throw away any rubbish - just my cards?) and I overreacted.
So did I overreact over Pokemon cards, and should I apologise?