- You don't look good together anyway.
- Move on, you deserve better.
- I guess now I can tell you that s/he made a pass at me when you were still together
- S/he's a jerk. What did you see in him/her anyway?
- Maybe s/he's just in for the sex or worse...for the money.
- It's time for a makeover and a visit to that gym.
- I told you so, it wouldn't last!
Could you say anything worse?