(VIDEO)Kourtney Kardashian finally admits Justin Bieber is the REAL FATHER to son Reign Disick… see more full

“They have hooked up a few times, including recently. It happens in L.A,” the source told People. “He has met her kids, but they don’t hook up around the kids. It’s on nights when she has help and is able to go out.”

Well, at least they’re considerate. And on what they think about each other

Kourtney is great. Justin thinks it’s cool that she is older and hot. She isn’t clingy and has her own life,” the source continued. “There are no bad consequences for Justin to hook up with her. She is very easy going and just makes it fun for him to be around her.”