Before running away to Miami, it looks like Scott Disick was really trying to make it work with Kourtney Kardashian.

In the latest trailer for Season 13 of Keeping Up With the Kardashians, the father-of-three opened up to sister-in-law Khloé Kardashian about his on-again, off-again relationship with Kourtney, and revealed they shared a kiss!

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"I would never be over her, she's the love of my life," the 33-year-old says before Khloé asks, "Did you and Kourt kiss?"

Scott responded, "We didn't kiss," but his blushing face revealed the truth.

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However, shortly after taking off for Costa Rica for a vacation with kids Mason, 7, Penelope, 4, and two-year-old Reign, Scott was caught sneaking a model into his hotel room — and was kicked off the trip.

“Scott’s been hooking up with a young model… He actually flew her to Costa Rica and tried to hide her in his hotel room without the Kardashians knowing,” an insider told In Touch. "They went to get him in his room and saw [the model] standing there. Scott immediately panicked and tried to get them out, but it was too late.”

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The source continued. “The crew took down [the model’s] info, made her sign a non-disclosure agreement, and then put her on the first flight home.”

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Scott with a mystery blonde in Miami.

It wasn't long after that Scott was spotted in Miami kissing another model Jessica Harris, better known as J Lynne.

Meanwhile, Kourtney is hinting to friends she is pregnant — but sources reveal exclusively to Life & Style that Scott is not the father.

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Kourtney, 37, has been hooking up with a younger model of her own, 23-year-old Younes Bendjima, after her attempt at reconciling with Scott fell apart.

"[Scott] tries to be on his best behavior for months and then will slip up and disappear,” says an insider. "Kourtney wouldn’t mind having another child. She thinks that she was truly put on this Earth to be a mom."

Let's hope they can get it together for the kids! For a look back at Scott before he was Lord Disick, click through the gallery below!