So Kevin Federline and his wife like to party separately.
We've established this in the past, but it's looking more apparent than ever in recent days. While K-Fed gets his drink on, Britney Spears has been spending nights at the Beverly Hills hotel instead of at home, but sources say their marriage of two years is fine.
Their newest child, Jayden James Federline, was born September 12, but Federline seems to be concentrating more on his other baby -- his CD, Playing With Fire, out October 31 -- than on his family.
"Kevin's schedule's packed with promotional appearances," a pal of Federline, 28, tells Us.
On October 18 -- the day after the lovely Spears, 24, went to Las Vegas with Sean Preston, 13 months, and their newborn son -- K-Fed partied at L.A.'s Les Deux.
The following night at club Element, he toasted his Tonight Show With Jay Leno performance. And the next night, K-Fed danced with a mystery woman at Area.
"They had their arms around each other briefly," a witness tells Us.
Says a K-Fed pal, "It's still an obstacle for him to balance family and partying. Kevin's gonna be Kevin. But Britney knows that."
Spears, for her part, hit Vegas clubs Pure and Tao with a gal pal October 19.
"She was dancing and twirling around," says a witness.
She returned to L.A. the next day, but by October 23, the pair were apart again: He was in Chicago to appear on WWE's Monday Night RAW; she checked into the Hotel Bel-Air. But despite their separate schedules, a pal says, "They love each other no matter what."
It's no thang. K-Fed can just carry Jayden James pictures in his wallet.