Kourtney Kardashian will "never get back together" with Scott Disick.

Kourtney Kardashian

Kourtney Kardashian

The 37-year-old TV personality enjoyed a nine-year relationship with her former boyfriend - with whom she shares three children, Mason, six, Penelope, four, and Reign, 23 months - but it seems the brunette beauty is moving on despite Scott's best efforts to get her back during a brief holiday in Mexico.

A source said: "Scott has always hoped he could win Kourtney back, and he did set up this trip ... of course he hopes one day she will see the light and come back to him. That's why he went to rehab. He has tried everything, but it's Kourtney who won't go there. I still think it could happen one day, but so far Kourtney has not been willing to go back there."

The source even claimed that the 'Keeping Up with the Kardashians' star is actively dating other people.

They added to Us Weekly magazine: "Kourtney is actively dating... She's over Scott, she'll never get back together with him."

The pair last split in July 2015 after Scott was spotted getting up close and personal with his ex-girlfriend Chloe Bartoli in France.

Previously, it was reported that Kourtney wanted to "make it work" with Scott, as she wanted to have more children in the future and didn't want them to have different fathers.

A source said at the time: "Kourtney and Scott have finally gotten to a place where they can both be completely honest about everything. And it is totally obvious to them now that they are meant to be together, so they just have to do whatever it takes to make it work.

"Obviously she wants all of her kids to have the same father."

Meanwhile, 33-year-old Scott has been doing all he can to win his former flame back with a romantic trip to Cabo San Lucas, Mexico over the weekend.

An insider claimed: "Scott set it all up and [it] was a way to try and make things work again with Kourtney. He surprised her and whisked her away on this trip."