Lauren Conrad and Derek Hough added fuel to the fire of dating rumors by partying together – very closely – in the back room at L.A.'s Trousdale Lounge. Though they were with friends – she had Lo Bosworth with her, and he was hanging out with Mark Ballas – they mostly spent time with each other. They even hit the dance floor, where Hough had his arm around Conrad's waist. "It was obvious there was a lot of chemistry between the two," an onlooker says. "She was very smitten." So smitten, in fact, that they shared some smooches. Says the onlooker: "Neither seemed embarrassed about kissing in public."
However appearing to be keeping the relationship under wraps Lauren was seen leaving the Nightclub with with Mark Ballas instead.
Lauren was dressed in a pair of tiny leather shorts and a mustard coloured sweater for the evening.
LC had her hair in an elegant oversized bun and wore a statement silver necklace and brown heels.
