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"We're not planning to have more kids any time soon," Thicke, 35, tells People. "It's hard enough to balance things the way they are. I don't want to throw another child into the mix right now."
The R&B singer, 35, and his lovely wife, who starred opposite Tom Cruise in Mission: Impossible Ghost Protocol last year, have a 2-year-old son Julian Fuego, but he admits that his reality-show schedule makes it difficult to spend enough time with the adorable tot.
"The show is really taking time away from my kid," he explains. "I try to have him come to the set if I can, and I spend a couple of hours with him. He's been in my dressing room, playing with Play-Doh. I really love when I'm with him."
Thicke is surprisingly honest about how difficult it is to balance family time with a demanding showbiz routine.
"We just haven’t had a lot of time to spend together," he adds. "That's one of the sacrifices you have to make in this business, unfortunately, you know?"
Calling his wife, 36, an "incredibly strong and brilliant woman," Thicke explains that they cope with the craziness of two high-profile careers with honesty and patience.
"You can keep sweeping stuff under the rug, but until you really tell each other how you feel about stuff, you really can't get past anything," Thicke says. "Even though the truth hurts sometimes, we try to be painfully honest with each other. We try to help each other."