I recently got into an argument with my boyfriend. Everytime we get into an argument he leaves me for the night and goes to his parents. This has been a huge issue for me as I'm relating it to abandonment and distrust in him. We have talked about it, he's aware of how it makes me feel but has continued to do it. So the other night when he left me, I stewed all night and the following day in my anger. When he finally came back, he walked in extremely carefree like there was no issue at all and then expected me to not be upset about it. One thing led to another and I ended up slapping him and telling him to get out. I have since apologized for my behavior and regret doing it, and want him back. He has not answered any of my calls or responded to any messages. He has a very prideful personality and I'm worried I'm gunna lose him. Any advice on how I can make it up to him but also stand my ground on him always leaving me?