He 30M broke up with me 30F just before the engagement

I have been with my partner for 6 months. From the very beginning it was clear he was a bit of a joker and likes having a laugh. However that usually came with mild ‘joky’ insults like making fun of how I sound or saying I’m stupid. It was a shock at first but for some reason I allowed it to continue. At some points I did explicitly state that he insults me a lot and I would prefer if he’s nicer. But he carried on anyway. At one point a few days in a row he jokingly called me a stupid b****. I made it clear I didn’t like this. Since then he stopped called me that and instead called other women this term which I was still not happy with. I did explain the jokes make me upset. We were long distance so we met a couple of times and had great chemistry in those times. We would talk for hours over the phone every single day. He said big things about how we should get engaged soon and get marriage and go on honeymoon. in our culture we don’t meet too much before marriage.

we finally had a time where we could meet for a couple days together. Since he saw me this time he acted very different he looked at me different even. He walked ahead of me and didn’t open doors for me. To the point where he opened a door walked in and then the door closed on my face. He talked to other women happily in front of me and when he talked to me he seemed annoyed. I noticed this and questioned his difference in behaviour. He initially said it was nothing and he feels relaxed with me. He then later told me he suddenly feels no chemistry anymore. This was a big shock. We had a long discussion and he said I should be happy he didn’t lead me on and we weren’t even together for long. He said he didn’t realise his jokes were bad thought I liked them. Said he’s learnt his lesson. Nothing makes sense. We were planning an engagement. How should I make sense of all of this? How do I even start moving on?