If you’re having trouble emotionally regulating to the point you are being abusive to your partner (and yes, what you have described is emotional/verbal abuse) then perhaps you aren’t mature enough for a relationship.

Do the right thing and break up. Work on yourself while being single. He should not be a casualty of your personal growth.

If you’ve run out of things to talk about and spending time together is painful after five months, it sounds like the relationship isn’t going to work. You two might just not have enough chemistry, which is okay.