What do you think of my ex's behavior?

I dated a guy for 4 years, I was 18 and he was 26 when we started dating. I stuck with him until I was 23 because he instilled in my head no one else would want me, I would never find another boyfriend, and that I had too many problems. He was always infatuated with other women and constantly compared me to them and stars and models. He was so obssessed with asian women, and being an asian woman myself, I found it so repulsive after awhile. He was very mentally ill obviously, and it took me 4 years to finally realize that I didn't deserve to be emotionally abused like that. Well, I recently found out that he goes to an all Korean church (he is white), which is VERY amusing to me since it must mean he is very desperate to find another asian woman. What do you think of this? I know it's none of my business now, but I'm just so upset that I dated someone so pathetic and desperate for 4 years.