Looks like the Lauren Conrad and Derek Hough dating rumors are true.
The hot young couple added fuel to the fire by partying together - very closely, as a matter of fact - in the back room at L.A.'s Trousdale Lounge.
While they were with friends - she had Lo Bosworth with her, and he was hanging out with Dancing With the Stars co-star Mark Ballas - they mostly spent time with each other. Then they hit the floor, where they danced lovingly.
Derek Hough and Lauren Conrad are totally a couple.
"It was obvious there was a lot of chemistry between the two," an onlooker says. "She was very smitten." So smitten, in fact, that the normally reserved reality TV star and fashion designer shared some smooches with her man.
Says the onlooker: "Neither seemed embarrassed about kissing in public."
They seem like a good fit, don't you agree?