painaholic
A person who's so used to getting hurt that they look for it in every new love interest, like they're waiting for the other shoe to drop.
She dated a guy who had a habit of disappearing. Now she’s with another one who does the same thing.
He started seeing someone new just to prove he could handle more heartbreak.
She broke up with her boyfriend because he was too kind, and now she's dating someone who yells at her every day.