If you’re wondering what went wrong between Jennifer Aniston and John Mayer (and I know you are), you finally have your answer: Twitter. John, it seems, chose to constantly update his Twitter account instead of returning Jen’s incessant phone calls from Europe, where she was promoting her film “Marley & Me.” According to the Daily Mail

The 40-year-old actress… was unimpressed he found time to write random ramblings on the site, but not to contact her.

A pal claimed: ‘John suddenly stopped calling her or returning her e-mails and when she would finally catch up with him, he’d say, “I’ve been so busy with work. I’m sorry I haven’t had time to call you back.”

Jen was fuming. There he was, telling her he didn’t have time for her and yet his page was filled with Twitter updates. Every few hours, sometimes minutes, he’d update with some stupid line. And in her mind, she was like, “He has time for all this Twittering but he can’t send me a text, an email, make a call?”

Oh, if I know our Jenny, she’ll be bouncing back in no time. Wait, did I just say “bouncing back?” Because I meant “deciding whether to watch ‘Mr. and Mrs. Smith’ or listen to ‘Your Body is a Wonderland’ when she finally kicks the chair out from underneath herself.” My bust!

Clutching the script for “The Baster” the day after the break up:

Rihanna has finally seen the error of her ways and kicked Chris Brown to the curb — not because he beat the living shit out of her and threatened to kill her, mind you, but because he won’t dump his 39-year-old manager Tina Davis. A source told Access Hollywood

“Rihanna’s unhappy, and she has been for some time unhappy with the relationship that Chris Brown has with Tina Davis. It’s not exactly clear whether or not it is a sexual relationship, but Rihanna has come out and given Chris Brown the ultimatum.”

There have been rumors swirling for years that Brown and Davis have had a relationship that went beyond their business ties. Apparently [Brown] refused to part ways with his manager — who acted as his mentor, and maybe more, since his early teens — so he sided with Davis over his Covergirl girlfriend.

Funny, I just read something about this guy who liked bangin’ some old broad over a hot young piece of ass. Oedipus, I think his name was. I’m pretty sure it had a happy ending.

Leaving ‘Da Silvano’ restaurant in Manhattan: