Could Jennifer Aniston be single (again)? Her whirlwind romance with singer John Mayer might be over. The Daily Mirror reports 30-year-old John broke up with 38-year-old Jennifer this week because he wasn't ready for such a serious relationship. Jennifer has had a rocky love life since her split from ex-hubby Brad Pitt four years ago. Guess being rich and beautiful isn't everything.

Jamie Lynn Spears betrayed by baby daddy? Rumors were circulating that Jamie Lynn's fiancé,19-year-old Casey Aldridge was a cheater. Now the other woman, 28-year-old Kelli Dawson, has come forward.  In Touch Weekly reports Casey hooked up with Kelli while Jamie Lynn was pregnant, and they've continued to have an affair. Jamie Lynn and Casey are the parents of 2-month-old Maddie Briann.  If it's true, we hope the 17-year-old actress thinks long and hard before tying the knot with this guy.

Samantha Ronson on gal pal Lindsay: The 31-year-old celebrity DJ and rumored girlfriend of Lindsay Lohan gave a candid interview to Harper's Bazaar.  Samantha says about Lindsay, "...She's great. She's also 22 years old. I think people forget that. With the Internet the way it is, one second we're enemies, one second we're best friends, one second we're lovers, and then we're broken up."