The sun hasn't yet set on this May-December roll in the hay.
Kourtney Kardashian and Justin Bieber are totally still bumping uglies because they're both good-looking and down for a good time.
However, as the elder in the relationship (she's 36, he just turned 22), Kardashian has set a ground rule or two about their dalliances, given how fast gossip travels (i.e. - she's carrying Bieber's child, according to the tabloids).
“Justin’s learned to keep his mouth shut, because Kourtney made it clear she needs this to be discreet for the sake of her kids as well as the complicated situation that’s going on with Scott [Disick],” a source told Radar Online.
Kardashian is still trying to come around to the fact that her relationship with Disick is over, after he was photographed partying with girls in Mexico.
“That suits Biebs just fine,” the source added.
“He says Kourtney’s the best lover he’s ever had and he can’t stay away from her."
Other ladies in Bieber's life (like Hailey Baldwin) need to get in line and grab a book, because Bieber is all about the Kourt right now.
“He loves having an older, experienced lover and they have a great friendship connection, too, so it works for both of them," the source said.