You know... i've always had this theory...

The 3 Group Of People You Should Never Date:

1. Classmates/Collegues
You see them everyday at work/school! Thats too much time together. And it gets awkward if you breakup.

2. Friend/Buddy's Ex
So yeah, you might have the satisfaction of knowing you're better then your friend in a relationship. Unless you're not.

3. Ex's Friends/Family
Its just plain wrong and wierd....