My parents got divorced when I was 16. I think it messes with my perception of relationships because I feel like my dad abandoned me. All "divorced kids" feel that way, but I think because I was 16, I feel like he got the chance to know me as a person, and that still wasn't good enough for him to stick around. So, sometimes I feel like no matter how "good" I am, the other person will leave.
Plus, my dad left my mom for a younger woman. Oh, you can imagine how many issues this brings up.