When someone hurts you, you take it personal and are sensitive to it so it is harder for you to forget it. You just are afraid that the same mistakes people like your boyfriend will make, You feel that you'd like to do something different but don't know how to but some of your thoughts are reasonable based on how you described it. If I had my boyfriend doing out at night I would question it as well. What sort of trouble did he get in before? Sounds like you are really concerned about his behavior. This makes it hard to relax and go to sleep. I see you've done the right thing and talked to him but his reaction he didn't take it very serious.
Anyway remember that when you are too sensitive it is a sign that you have a big heart and aren't afraid to let others see it. In fact it is a sign of strenght. Perhaps you could start to see your sensitivity as a gift and that gives you the freedom to be strong.
Some things you could consider is like I said embracing your sensitivity, positive thoughts, perhaps you could read through some quotes to keep you inspired. Or even talk to someone about how you are feeling.
Feel free to message back here or by 1 on 1 chat.
@intellectualLion484