Boyfriend started an argument and I don’t know how to feel

So, for my birthday last year, my mom gifted me a cute cut out one piece swimsuit. Since summer is approaching, I tried it on and I was feeling very confident. I went on Tik Tok and recorded myself dancing to music but I didn’t post it because I usually don’t post things like that to avoid outside criticism and I am respectful of my relationship. Two days ago I recorded this. I kind of forgot until I opened Tik Tok and it was in my drafts. I showed him the video and he said “ you can’t be serious”. I laughed it off because I thought he was joking. Then, he starts saying how I might as well post it and why would I want that kind of attention. Mind you, I DIDN’T even post it. Saying how the video was “hot girl shit”. Of course I told him he was insecure and maybe he should record himself in swimwear or no shirt on to make himself more confident because that’s the reason I did it. I also told him that if it was a problem, he can leave because if I wanted to post it, it would’ve got posted regardless of how he feels because it’s my body. He apologized a few minutes later after I repeated everything he said to him and saying how he should be my number one supporter if I did post that type of content. I told him how stupid he sounded cause he did. Im still feeling uneasy because just imagine if I had posted the video! He really would’ve freaked out.

Thoughts and opinions on this ???