Amid secret love affair rumors, Kendall Jenner and Scott Disick were spotted enjoying a lunch date together in Los Angeles earlier this week.

According to Daily Mail, the model and half-sister Kourtney Kardashian's longtime boyfriend and the father of her three children met up with actor George Hamilton and Gigi Hadid's father Mohamed at Il Pastaio in Beverly Hills on May 1.

The two then left the eatery together in Disick's red Ferrari.

How did the alleged hookup all begin? According to OK! Magazine, via HollywoodLife.com, the 19-year-old actually got caught on cameras flirting with her older sibling's lover on the Kim Kardashian wedding episode of "Keeping Up with the Kardashians," which was filmed back in May 2014.

The hectic day apparently gave Disick the chance to seduce Jenner; however the pair's flirtation never made it on-air.

"Scott timed it perfectly," the publication claimed. "Everyone was so caught up in Kim's wedding that they didn't pick up on anything else that was going on around them, and Scott jumped at the opportunity to get cozy with Kendall."

The publication added that the couple hooked up months later while in Europe, with Disick convincing Jenner that "there was nothing wrong with them misbehaving a little" since they are not related.

Star Magazine also reported that Disick drunkenly proposed to Jenner.

"He didn't get down on one knee or produce a ring, but he said, 'We should get married,'" an insider revealed.

However, the teenager allegedly shot her brother-in-law's proposal down, telling him to "end 'whatever this is'" and "go home to Kourtney and make things work."

Meanwhile, Disick's former best friend and manager David Weintraub recently revealed to Life & Style, via HollywoodLife.com, that the 31-year-old cheated on Kardashian with "countless" women.

"Scott says they have an arrangement, kind of an open marriage," said Weintraub. "When he's away, he can live the way he wants to live."