Sucks to be you, Denise Richards.

Just a couple months after Denise’s break-up with Richie Sambora became public, her ex-hubby Charlie Sheen has gone and got himself engaged again. The newest future ex-Mrs. Sheen is Brooke Mueller, a 29-year-old real estate investor.

It seems Brooke’s investment in this relationship is already paying dividends; Charlie proposed with a $500,000 engagement ring on a Costa Rican beach.

This is Sheen’s second marriage. His first marriage, to Donna Peele, lasted about a year, and, most recently, he claimed Denise Richards as his bride. They divorced less than two years ago.

Denise and Brooke have reportedly forged a friendship of sorts, and have been spotted out and about together with Denise and Charlie’s daughters. “I really like her,” said Denise, “and that’s something people have a hard time with, too. I honestly want my girls happy and if they can have a harmonious environment at my house and at his house, that’s all I want. I really like her and I’m very, very happy for the both of them and I want my girls happy.”

See, guys? Happy. Happy! HAAAPPPPYYYY!!!!! EVERYBODY IS TOTALLY HAPPY. (Except those kids, every time Denise insists on dragging them to the red carpet events they hate so desperately.)