Why does my boyfriend do this?

I thought my boyfriend was recording one of our sexual conversations after he screenshot me an image, and saw the recording button at the bottom of the screen. He explained to me because he used the screen recorder as a timer he could visually see, so he does not lose track of time and tried using the actual timer on his phone but said it makes him lose track of time for work. I'm not even sure if this is an excuse for the screen recorder, but I just accepted it because he is always late for work.

I did not really get too upset about it since he was being honest about it and showed me how it works. But he started over-exaggerating a lot of different aspects of the situation and extended it into other issues we had in the past. He started saying he realised he broke his promise to me to never record me, and then stated there were audio issues hearing me (there literally is) and thought about recording me so he can "playback" what I said. Then it went even further by him stating "you also did a bad thing by talking badly about me to your friends, so this is similar" (To me it seemed like he was trying to make things fair and equal?) and then mentioned about if I broke up with him he would just take it and he does not want to lose me then started saying "my trauma and security bug him a lot and wanted to talk about that with me"

I cut him short and basically said you are overthinking and trying to hurt me with your words and my experience. It was so bizarre how quickly he jumped from explaining to then trying to make me the bad guy by mentioning what I had done in the past? He mentioned working through "trust issues" and such, apparently for me but I think he needs it more than I do

Why does my boyfriend do this?
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