Cam's Man Moves In!

She's a notorious man-eater who has made her aversion to matrimony clear ("There are a lot of ways to approach commitment and relationships — and marriage is just one of them," she said in May).

But Cameron Diaz, 36, is getting serious with her model beau, and Jennifer Aniston's ex, Paul Sculfor!

The Shrek star and Paul, 37, who have been dating since June, have kicked their relationship up a notch.

"Paul has given up his bachelor pad," an insider tells OK!. "He moved into Cameron's home in the hills above the Chateau Marmont in Hollywood.

"They've settled into a comfortable routine. She drops him off at the gym."

Another pal adds, "Cam's just about as happy as I've ever seen her!"

The pair were first spotted on cozy dinner dates around L.A. early in the summer, when they were careful to shy away from the cameras.

But by the end of June they went public with the fling, and we snapped together shopping in Hollywood and then again at the U.S. Open in New York.