Chilli & Matthew Lawrence Going Strong, Spending Holidays Together

TLC's Chilli and actor Matthew Lawrence aren't as public about their romance as they used to be, but don't let the quiet fool you -- their relationship is still booming, and they're gearing up for some shared holiday cheer.

Sources close to the couple tell TMZ ... Chilli and Matthew recently spent their second Thanksgiving together, with the singer cooking up some grub for them, and Matthew was apparently blown away by the meal.

They've been doing the long-distance thing for a bit -- she's in Georgia, he's in L.A. -- but have still made time to see each other as much as they can.

Chilli and Matthew were together Thursday night for TLC's show in Vegas, and they both went to an Atlanta Falcons game together last month.

Check out the vid from the game, BTW -- that's Chilli and Matthew groovin' to Soulja Boy's "Crank That" ... with Big Boi's grandson!

Obviously, things appear to be going great for the couple ... and we're told they're gonna spend Christmas together this year, too -- another sign they're in this for the long haul.