Should I practice detachment from my boyfriend?

I’m very very attached to my boyfriend and it’s to a point where I feel the need to control his every move and think about him all day every day. I do think it’s unhealthy for us because I tend to want to control who he goes out with, and where. I do think it’s because he was dishonest in the past so it made me even more controlling. Also, I’ve been in a situation where typically I would leave him for doing me so wrong, but didn’t because I was so attached to him I literally couldn’t bring myself to leave. We did work on our relationship and are good now, but I’m wondering if practicing detachment would make things worse? In the future if he is dishonest with me again, I want to be able to leave him. Not stay cause I’m too attached.

Idk if detaching myself would cause issues, In the sense that he would notice I’m pulling back and him start questioning our relationship. Also any advice on how to detach if you’ve been there already?