1. dumping a girl, who has had suicidal tendencies (and attempts), since she was 8 years old, on her Birthday.
2. Buying a house with your girlfriend, then after 5 years together dumping her, and while shes moving her stuff out of the house, show up with your New girlfriend.
3. Buying a house with your girlfriend of over 4 years, then cheating on her with a mutual friend of yours, leaving her having to move out.
4. sleeping with a good friend of yours of 4 years, one of your best friends, then realizing afterwards that you don't want to be with her, then afterwards finding out she dumped your other friend because he wasn't good-looking enough, so all the while feeling bad for sleeping with her, you use the fact she dumped your other friend as a Scape Goat for dumping her.
These situations fit people i know, i was just curious as to which one is worse. For more details, ask away. (no names obviously)