She said… No?!

Scott Disick allegedly proposed to Kourtney Kardashian while vacationing in Costa Rica with her family — and she said no!

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“Scott proposed to Kourtney,” a source tells Us Weekly, adding that Keeping Up With the Kardashians cameras caught the whole thing. “Not with a ring. He just said, ‘Let’s get married.’”

But Kourtney — who shares Mason, Penelope, and Reign, with Scott — was pretty uninterested.

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“She told him no,” the source adds. “Scott was embarrassed, upset, and angry.”

The Costa Rica trip was a messy one for the former couple. During the same trip, Scott snuck a model he’s been seeing into his hotel room — only to get busted by the KUWTK camera crew.

“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,” a source previously told In Touch. “[The crew] 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. The crew took down the [the model’s] info, made her sign a non-disclosure agreement, and then put on the first flight home. It’s safe to say Kris [Jenner’s] plan to get Kourtney and Scott back together was an epic failure.”

Since the incident, the 33-year-old was caught getting affectionate with model J Lynne, and another model named Bella Banos, 20, opened up to In Touch about her relationship with Scott, revealing she was in Costa Rica with the famous fam.

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“Scott calls me his girl and we have said, ‘I love you,’” Bella told In Touch exclusively. “At first, Scott was just my friend. But he got to know me on a different level. We’re super connected. Scott will call me and say, ‘I miss you. I want to see you.’ He always flies me to wherever he is. We spend so much time together.”

Scroll through the gallery to see Kourt and Scott’s cutest moments with their kids!