Alex Rodriguez and Cameron Diaz are officially dating, a source close to the couple reveals to BettyConfiential. But Alex has one stipulation – he doesn’t want her attending the Yankee games.

The notorious lothario/baseball hero already slid into home with a notable lineup of celeb ladies. Madonna threw him a curve ball, Kate Hudson struck out and now Cameron might be going for a grand slam. Between that and his RBI scores, A-Rod has some impressive stats in every department!

Read Cameron Diaz Hooks Up with Alex Rodriguez

“He doesn’t want what happened to him and Kate to happen between him and Cameron,” says our source. “Kate was at every New York game and then some and even went to Alex’s game practice. Things got too clingy too fast.” As long as she doesn’t mind waiting for him outside of the stadium, Cameron and A-Rod might have a very happy future together.

“Cameron is not really into baseball, so she wouldn’t want to go to all the games,” says our source. “She’s private, too. She has her own career going and she’s not going to give that up for anyone. And, right now she’s booked solid, so it works for the two of them.” He thinks starting off by spending ample time apart might keep this relationship SAFE!

"They are taking it slow. Neither one wants a commitment right now,” adds our source.

Alex is on the road traveling to Minnesota and Tampa Bay this month, while Cameron is still filming scenes for Bad Teacher. Cameron will be a presenter for the 2010 MTV Movie Awards, on June 6, while Alex will be in Toronto. Then Cameron will be promoting new feature film, Knight and Day, which opens June 25th with her co-star Tom Cruise.

Our bet is all that time away from each other will make things eventually go foul.

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JoAnna Zulli is a New York-based writer who has worked for Star, Soap Opera Magazine, Woman's World, In Touch and the New York Post.