04/20/2007 at 03:00 PM EDT
It's official: Nick Lachey and Vanessa Minnillo are cohabiting.
On April 15 the couple of one year braved a nor'easter to move into their two-bedroom condo in Manhattan's new Atelier building.
"Nick carried the huge boxes while Vanessa helped with the small ones," a source tells PEOPLE. "They were soaked." (Rapper Eve also lives in the high-rise, which has a basketball court and indoor pool.)
Reps would not confirm reports that Minnillo has also moved into Lachey's Bel Air pad.
The move is just the latest sign that Lachey, 33, and Minnillo, 26, are getting serious. Last month, the TRL
host told PEOPLE she couldn't wait to be a mom
"I want to bring three boys up to be good men in this world and then one little girl." She said. "I always say I want three boys and a girl but at the end of the day I just want healthy kids."
Asked about Lachey, she said her beau "is a nice guy. He's in the studio recording right now [in] L.A., Nashville, New York. All over, with something for everyone to look out for."
What is it about them that clicks? "I think the thing that makes it work is our privacy."
Reporting by KC BAKER and MOLLY LOPEZ