Any time Ted did anything, basically.
When Ted cheated on Victoria with Robin.
"He cheated on the perfect girl in the first season, and then totally screwed her life up all over again six years later."
—Crystal Anne Libby, Facebook
CBS
When Ted made Robin get rid of her dogs because they were gifts from her ex-boyfriends.
"Meanwhile, Ted lied about throwing away all the stuff from his exes. That would have been instant breakup for me. Why are you so jealous of your partner's past?"
—lesaurores
Cliff Lipson / CBS
via BuzzFeed/Travel
