Scott Disick hasn't been happy "for a long time".

A source shared: "Scott hasn’t been happy for a long time. But it’s taken 'til now to realise that everyone would be better off if they weren’t together anymore."

The 31-year-old model - who has three children, Mason, five, Penelope, two and two-month-old Reign, with Kourtney - is also believed to have started drinking again because he will get "screamed" at if he's sober too.

The source added to US OK! magazine: "He’ll get screamed at whether he drinks or not, so he may as well drown his sorrows.

"He understands why people blame him, but home life hasn’t been a bed of roses for him either."

Scott is also feeling like the "naughty kid who’s been kicked out", after Kourtney's love for attachment parenting has meant that the two eldest children now sleep in the bedroom with her.

Meanwhile, the television personality recently revealed that the pair had "no time" to get married but admitted that they were enjoying looking after a newborn much more now since they have already done it twice before.

He said: "If it's not broke don't fix it - we're happy the way it is.

I don't even think we'll have time to get married at the rate that we're popping out kids.

"There's always so much in the beginning when they're that little.

Every day is such a big milestone, but this is my third time so it's just kind of a charm.

"You know it by now; the first one was scary, the second one was less scary, and the third one you're like, I get it, I got a whole team over here."