Lindsay Says Sam's "Not Single"

(X17 Online)

Looks like Lindsay Lohan and Samantha Ronson are slowly but surely confirming they are, in fact, a couple.

The two were partying it up last night at the Shrine nightclub at MGM Foxwoods, and when it was time for DJ Sam to step up to the stage, Linz took over the announcing duties and shared a lot more than fans were expecting.

"When the lights came out, she announced Sam and said, 'And no she's not single!'" an eyewitness tells OK!.

And our source says the hipster DJ couldn't help but let her gooey emotions show in her set either.

Sam played a load of slow smoochy songs, and lingered on Leona Lewis' "Bleeding Love" for much longer than other records.

Earlier that day, the nearly inseparable duo were "holding hands, acting all lovey-dovey around the MGM Grand," the source adds.

The declaration is just the latest sign of the two being way more that just best friends. Two weeks ago, Sam raised eyebrows when she changed her Facebook relationship status from "single" to "in a relationship." She didn't specify who that special someone is, but didn't quell talk by uploading a profile picture of her and the actress at Disneyland.

Lindsay is doing her part to drop hints too. A day after celebrating her 22nd birthday with Sam by her side, Lindsay appeared on Ryan Seacrest's radio show, telling him she would like to spend the next year "being with the person that I care about."