Patrick Dempsey: In Case There Was Any Question About that Divorce ...

Patrick Dempsey is still in the middle of divorce proceedings ... but in name only, because it's abundantly clear he and his wife are back together.

Patrick and Jillian are vacationing with their kids in St. Barts, and the pictures tell a compelling reconciliation story. Jillian filed for divorce 13 months ago ... we're told primarily because Patrick had become so obsessed with racing cars he became an absentee hubby.

He fought to get her back, and clearly won the battle.