Break Up & Divorce

Can someone make sense of this break up?

So a month ago we were talking about marriage etc.

Then I went away at the weekend. We had a falling out cos his phone died and I was convinced he cheated. We made up.

I got back we said we were fine. He said he loves me and we slept together. He took me out for my birthday.

The following day he ended it saying. The problems we had were too annoying (one minor thing of me asking if he was doing things behind my back because his behaviour seemed the same). Then he said he couldn’t fault me I was great apart from that. He’s putting himself and his hobby first. Then made another Instagram account and followed all the people hed tried to cheat with before and turned super cold to me.

Anyone work that out?
Can someone make sense of this break up?
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