My Ex Cheated and I Destroyed His Things

I need opinions ladies. A week ago today I found out my former BF cheated on me with a girl he was see while he was seeing me when weren't anything official. About 3 weeks into being "official" he cheated. He had told since before he didn't want to be in a relationship but I told him either we give it a try or it's over. He agreed to give it a try now I know it's because he feels lonely and didn't want to lose me. Well last weekend I find out he cheated on me and that same week my dad abandoned us. He told my mom he was going to work and never came back. He just left a letter, we're sure he went to be with another woman. As he has cheated on my mom before. I was at my Exs house alone when I found out he cheated and I was already distraught with everything that was going on with my dad. I went off completely and destroyed a bunch of my exs things. I went into a state of mind that I can't even remember some things. I feel completely terrible and that is not the person I am or grew up to be. I've never done anything like that ever. Granted 1st guy I've ever been in love with. But still I know my actions were completely wrong and definitely don't justify anything. Please thoughts?!? And please don't be harsh I again acknowledge that everything I did was beyond wrong and I apologized to him.