Scott Disick 'proved' himself to Kourtney

The 'Keeping Up With The Kardashians' star and the 33-year-old model - who have Mason, six, Penelope, four and Reign, 23 months, together - are reportedly back together after Scott showed her he was a changed man. A source said: "Their love for each other never went away. He's been trying to win Kourtney over for a while now, but his constant partying was a huge issue. He's been spending a lot more time with Kourtney and the kids and proving himself to show that his family is the priority." And the 37-year-old television personality was the one who inspired Scott to make the change. The insider told E! News: "He's doing his best to keep himself in check. Kourtney is definitely the reason for that. He still has his own place, but he loves her. He's always loved her and wanted his family back together. They're best friends - that's never changed, even when things were rough between them ... "Scott has just been over the partying. He got sick of it and decided to clean up his act. He was having people over at his house to party until 6 a.m. all the time, and he hasn't been doing that either."