1. "Forget him, there are lots of guys around you"
Of course there are but her eyes won't see them.
2. "You did the right thing, he was even trying to flirt with me"
Why didn't you say so before?
3. "He wasn't handsome, anyway"
Do you think she cares about that?
4. "I warned you before"
5. "I'm sure he was cheating on you."
You're just rubbing salt into her wound.