Owen Wilson welcomed his second child -- his first with personal trainer Caroline Lindqvist -- on Thursday, Jan. 30. Credit: Jon Kopaloff/FilmMagic

Boy, oh baby! Owen Wilson welcomed his second son, a baby boy, into the world with personal trainer Caroline Lindqvist on Thursday, Jan. 30, his rep confirms to Us Weekly.

This is Wilson's first child with Lindqvist. Back in October, Us confirmed that the actor, 44, and Lindqvist, 41, were expecting a child together. The parents, who reportedly first met when the actor hired her to be his trainer several years ago, are no longer together.

A source close to the situation told Us that the Wedding Crashers star made it clear to Lindqvist (who was in the process of divorcing her plastic surgeon husband) that he would be there for her, as well as the child once he arrived: "Owen plans to be involved with the baby and help raise him," the insider told Us.

Wilson is already familiar with fatherhood: the Internship actor welcomed son Robert Ford, 2, with ex-girlfriend Jade Duell in January 2011. Shortly after the tot's birth two years ago, Wilson told Jay Leno that fatherhood was "exciting."

"What they say about newborns and not getting a lot of sleep -- that's true," he told Leno. "You look at every place as a potential nap place. I'm looking at this couch -- maybe at commercial break [I'll take a] little shut-eye there."