9 Unforgivable Lies that Make Guys Decide to Break Up

6. She said, “I’m two years younger than you,” but then I found out she was lying about her age.

“It’s just like, you don’t lie about that,” said one guy. Lying about fundamental information like this shakes the core of a romantic relationship. The longer it takes for the truth to come out, the greater the shock when he finds out, so the best option is just being honest from the beginning.