Acting with Molly Stanton on the WB's Twins Photo by: JOHN SCIULLI / WIREIMAGE
Don't Look Back| Nick Lachey
Post-Jessica, Lachey is also branching out beyond music with new projects: She Said/He Said, a sitcom pilot he's shooting for the new CW network; YFly.com, a teens-only social network Web site Lachey cofounded that aims to keep out adult predators; and ads for the Core Secrets exercise DVDs with fitness trainer Gunnar Peterson, in which the singer flaunts his sculpted physique.

Working it in an ad for a new exercise DVD Photo by: SPLASH NEWS
Don't Look Back| Nick Lachey
Which isn't to say that it's all work and no play for Lachey, who has been spotted with enjoy himself," says the source close to Lachey. "He's not looking for a serious relationship. His girlfriend right now is his album." He has also been spending time with his family and getting ready for the arrival of his brother Drew's baby girl. "He'll be a great uncle," says Drew's Dancing with the Stars partner Cheryl Burke, 21, who's hit the club scene in L.A. with Nick, sparking talk that the two were an item (nope). "He's been there 100 percent, and I know he will be the one to spoil the baby."

But if starting his own family is a ways off – "It's something that is important to him, but when the time is right," says the source – Lachey has begun the next chapter. Calling "Resolution" one of his favorite tracks on the new album, he said, "It's kind of my way of saying, 'Okay, I'm letting go of this. I'm never looking back.'"
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