"What's going on? Are you dating?" Jenner asks Disick. "Are you dating one person?"
Disick confirms he's dating someone in particular, prompting Jenner to specifically ask about Richie. The 34-year-old club promoter responds by saying Jenner knows "who it is."
"Wait, so how old is she?" Jenner inquires. "Because I really don't know. Is she [my daughter] Kylie [Jenner's] age? 20?"
Disick tells Jenner that Richie, the daughter of singer Lionel Richie, is 19 years old. Jenner then recalls how she was 17 when she started dating her late ex-husband, Robert Kardashian, who was 12 years older.
"You were underage," Disick says. "[Sofia's] not."
"Oh, touche," Jenner responds with a laugh.
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Disick and Richie re-sparked romance rumors in September after denying dating reports in May. The couple were openly affectionate in social media posts during a trip to Mexico in October.
"Scott and Sofia seem very happy together," a source told E! News at the time.
Disick split from Kardashian in 2015 after nine years of dating. The pair share three children, 8-year-old son Mason, 5-year-old daughter Penelope and 2-year-old son Reign.
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