New couple?

Although a sighting of DJ AM and Nicole Richie the other day sparked rumors that the once-engaged pair were back together, insiders say the DJ has found love with Michelle Trachtenberg. Things are serious after one short month of dating, according to an insider. "Adam really likes Michelle," said the source. "She's down-to-earth and totally different from Nicole. Michelle isn't into the tabloid thing. She likes to go out, but she doesn't seem to need the spotlight like Nicole. Michelle really likes AM, and he thinks she's something special." The DJ reportedly gave Trachtenberg a $2,000 Balenciaga bag for her 21st birthday earlier this month, although he had to miss her party at Koi due to work. A friend of Nicole Richie says the Simple Life star doesn't know how close her ex is with Trachtenberg, but "she loves AM and only wishes the best for him."