The 37-year-old went on a dinner date with 25-year-old Quincy Brown in Los Angeles on Wednesday.
Quincy is the son of Kim Porter, Diddy's longtime estranged partner.
The pair were pictured leaving Craig's Restaurant before getting into Kourtney's car.
According to TMZ, a close source says that they are strictly just friends. The reality star had just returned from a family vacation in Hawaii with ex-boyfriend Scott Disick and their three kids.
