A source told People:
“They have hooked up a few times, including recently. It happens in LA.
"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."The source added: "Kourtney is great. Justin thinks it's cool that she is older and hot. She isn't clingy and has her own life.
"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.”