Hollywood's best-kept secret! JEN & KEVIN DATING!

A shoulder to cry on could lead to something more romantic for the singletons

If anyone knows how to handle the media attention of a messy divorce, it's Jen Aniston and that's exactly what she told close friend and former co-star Kevin Costner when she reached out to him in the wake of his shock split from his wife of 18 years Christine Baumgartner.

"Jen was one of the first to contact Kevin when the news hit. They've been solid friends since filming a love scene together for Rumor Has It in 2005 and they'll always check in with each other when they're in the same city and have lunch together if they can," a source tells Woman's Day, adding that the support goes both ways.