AceShowbiz -

Kourtney Kardashian is reportedly pregnant with her fourth child. However, the "Keeping Up with the Kardashians" star, who's already a mother to three kids Mason, Penelope and Reign, doesn't know who's fathering the yet-to-be-born baby, a source reveals.

Amid reconciliation rumors with Scott Disick, Kourtney was spotted leaving a hotel with model Younes Bendjima on December 17. The pair walked side by side as they made a low-key exit from the SLS Hotel in Beverly Hills.

Kourtney, however, celebrated Christmas with Scott and their family.

Merry Christmas from my modern family to yours...

A photo posted by Kourtney Kardashian (@kourtneykardash) on Dec 25, 2016 at 9:22pm PST

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"Kourtney has a thing for boy toys, and Younes is just her type," a source tells In Touch, "She's been boasting to pals about his amazing six-pack, telling them she can't keep her hands off his sexy body. Scott hit the roof when he heard she was hooking up with Younes."

A representative for Kourtney hasn't commented on the report yet.