10 Best and Worst Celebrity Bachelors

His songs make ladies swoon, but if you enter a relationship with John Mayer, be prepared to have it tweeted about, talked about, and end out of the blue, like his relationship with Jen Aniston.

Super sexy funnyman Bradley Cooper is the perfect mix -- He's the man all the girls love, but the guys can still relate to. Rumored to be dating Renee Zellwegger, this Hollywood "it-guy" is at the top of his game. And that makes him hot.

Every gal wants to be the one to get George Clooney to put an end to his bachelor ways, but this really doesn't seem like it will ever happen. So unless you want a relationship that will end 11 months from now (his average), stay away from gorgeous George.

"Gossip Girl" star Chace Crawford seems to be the epitome of the Southern gentleman, wooing the ladies with his down-to-earth personality and his stunning good looks.

Notorious Hollywood starlet-loving <a target="_blank" href="http://www.foxnews.com/slideshow/entertainment/2009/10/08/celebrity-famous-baseball-wives-girlfriends">Derek Jeter can't seem to get enough of the famous ladies</a>, and they can't seem to get enough of him! Lucky for him, his teammate Alex Rodriguez makes him look like a saint!

As one of Hollywood's hottest up and coming actors, the handsome Chris Pine seems to be at the top of every Hollywood ladies dating wish list. And with his starring role in this year's box office hit "Star Trek," we are predicting he won't be single for long! Grab him while you can.

Leonardo Dicaprio may be hot, rich, and super famous, but he has a reputation for blowing through models faster than a box of Kleenex. It's been said that Leo drops the ladies once they hit their mid-twenties. Yikes.

As any fan of "Newlyweds" will remember, Nick Lachey appears to have the patience of a saint and seems to be sweet, charming and romantic. Add his smokin body to the mix and you've got yourself a perfect catch. If only his career could get a jump-start...

Tony Romo seemed like the perfect boyfriend when he was with Jessica Simpson, but dumping her unexpectedly on the night before her birthday and then partying and celebrating his newfound single status after the fact indicates that Tony may be bad news

Despite the fact that he has girls throwing themselves at him from every which way, Rob seems to be taking the attention all in stride and hasn't taken to becoming a womanizer, indicating he may be a pretty decent guy who's just looking for love. That makes him the ultimate Hollywood catch. But he could use a shower.