Brittany Kerr Returns to L.A. Bar Scene … without Jason Aldean

Brittany Kerr
Returns to L.A. Bar Scene
... without Jason Aldean
Brittany Kerr went back into the danger zone Tuesday night  ... the center of the Hollywood bar scene ... only this time, the former "American Idol" contestant was spotted with a man who WASN'T wearing a wedding ring.

No word on who the mystery dude is ... or how they know each other ... but as long as he's not a married country singer with two kids at home, shouldn't be a problem.

Country Star Jason Aldean — Hot and Heavy With ‘A.I.’ Chick … Who’s NOT His Wife

Country Star Jason Aldean
Hot and Heavy w/ 'A.I.' Chick
... Who's NOT His Wife
Country music superstar Jason Aldean got up close and personal with a former "A.I" contestant ... right in the open at a very public bar on the Sunset Strip. There's just one problem ... he's married to another woman. 

TMZ obtained photos of Jason and Season 11 "A.I" contender Brittany Kerr taken on the crowded bar patio area at The Den on Wednesday night -- frequented by locals and tourists always on the hunt for celebrities.

In the photos Aldean and Kerr get very flirty ... hugging, touching each other and at one point it appears Aldean goes in for a kiss.

Aldean --- who performed this weekend in So Cal -- eventually left the bar in a cab without Brittany.

Heres the rub, Aldean is married to his high school sweetheart, Jessica Ussery, who he tied the knot with back in 2001 and they have 2 kids together.

We reached out to Aldean for comment several times but have not heard back. No comment from Kerr either.