Damn, and they only started dating last month!

Charlie Sheen's ex Denise Richards probably goes on a lot of dates, but it was a big deal when she started seeing Motley Crue bassist in December 2010.

But their whirlwind romance has come to an end!

"It's crazy how this is being made out to be some big breakup. They were never exclusive or serious to begin with!" a source tells Us. "I could count on my hand how many times they went out. They decided to try it and she was not interested."

So much for love!