Jon (left) and Hailey (far right) arrived late night (3 a.m.) to the Lexington Bar and Grill.

The two were accompanied by a friend of Hailey’s (brunette) and their body guard (center).

John bought a round of Southern Comfort shots for everyone in the bar.

The three were looking intoxicated, though the body guard (who drove the red Escalade they arrived and left in) only drank water.

Fans pose with Jon after he buys everyone in the bar a shot.

Hailey poses with her friend who tagged along.

The two girls pose with a bar patron.

Hailey and Jon start to get close.

Our sources say they were all over each other by the end of the night, kissing and hugging.

The group left at around 4:30 a.m.

Looks like Jon Gosselin and Hailey Glassman are at it again.