X17 XCLUSIVE: John And Jen Hookin' Up?! Shackin' Up?!

We JUST spotted John Mayer leaving Jennifer Aniston's Hollywood home after the two got together for a romantic dinner at Sunset Tower last night! X17 photogs caught John driving off in a black Cadillac just a few moments ago, and said that the musician did "everything he could to sneak out of Jen's place today." Even though the two left Sunset Tower separately last night, it looks like there was an overnight bag involved!

Jen started off her night at the Glamour Reel Moments event, and then headed to Chateau Marmont for the afterparty and stayed for about thirty minutes. Jen arrived at Sunset Tower's Tower Bar around 10:30 pm to meet up with her former flame, and she left around 12:45 am. Though Jen managed to sneak out and slip into her limo, we were able to get a shot of John as he left!

It looks like the relationship is back on! Jen's happy to have her man back, John's happy to be in the headlines, so everyone wins!

Our photogs are with John right now - more details to come!