Carrie Underwood knows the way to get over a bad breakup – work hard and become more successful than your former beau.The 25-year-old star has dated a series of Hollywood hunks including Gossip Girl's Chace Crawford and American football star Tony Romo. And although Underwood insists she's not akin to the vengeful character in her hit song Before He Cheats, she does relish in the revenge her superstardom has already provided her against former flames.She says: "Cheating is a deal breaker. If you cheat, you're gone. Getting revenge on a guy is just not worth it to me. I mean, it definitely sucks at the time, but obviously you're not supposed to be with that person."The best revenge I can think of is becoming famous.