Disclaimer: I don't own Supernatural or the characters.
Dear Jessica,
four years now since the breakup and you're now married with someone else. I got the wedding invitation you sent me. I'm sorry I didn't come, but we haven't even spoken since we broke up and I just thought that if we would meet now things could get too complicated between us. It's not like it didn't want to come, I just thought it'd be for the best if I stayed away. I heard you're pregnant. May the kid be as healthy and beautiful as you.
Sincerely, Sam Winchester.