9 Unforgivable Lies that Make Guys Decide to Break Up

4. She said, “I made plans to hang out with my girlfriends,” but then I found out she actually met up with her ex.

“If she didn’t think what she was doing was wrong, there’d be no need for her to lie about it like that,” said one guy. If your boyfriend finds out you’ve lied so you can meet up with your ex, he’ll have to assume you’re cheating regardless of the actual situation. Provided there are no special circumstances, it’s probably best to avoid contact with your ex-boyfriend altogether. And if there are, tell him the truth while assuring him that you’re only interested in him.