Love triangles are always difficult, but the whole situation gets even more complicated when two of the participants are pushing 40, and the third isn't even old enough to drink.
That's the lesson Kourtney Kardashian and Scott Disick are learning the hard way these days, as Sofia Richie is apparently causing major problems for their co-parenting relationship.
The issue, it seems, is that Scott and Kourtney continue to spend time together, as people who have three kids together are wont to do.
And apparently, that doesn't sit well with Sofia.
Reports that Sofia is jealous of Kourtney have been circulating for months, but it seems the model has recently become full-on obsessed with the possibility that the mother of three will attempt to win back her baby daddy.
“Sofia is beginning to fight feelings of jealousy as Scott and Kourtney continue to spend more time together,” a source tells Hollywood Life.
“Sofia did her best to be cool with Scott’s relationship with Kourtney for a while," the insider adds.
"She wanted to be the cool girlfriend, which was easier to do when Kourt had a boyfriend.
"But now that Kourtney is single and dating again, Sofia struggles with the time Kourtney spends alone with Scott and the kids.”
Also not helping matters is the latest round of rumors that Kourtney is looking to bang Scott for old times' sake.
“Scott is looking really good lately and it stings when Sofia wants to see her sexy man him but can’t because he is busy with Kourtney,” the insider dishes.
“Sofia supports Scott being a great dad, she just wishes Kourtney wasn’t around him as often.”
So she wants Scott to be a great dad who has no relationship with the mother of his children?
Did we mention Sofia might be a bit young to cope with the complexities of her current romantic situation?
The insider goes on to say that Sofia “does not believe” Scott is over Kourtney “at all.”
“She sees the way Kourtney still looks at Scott with love," the source adds.
"Sofia does not want to lose Scott back to Kourtney. It would break her heart.”
Despite appearances to the contrary, we're pretty sure Sofia can rest easy.
It's unclear if Kourtney is really dating Luka Sabbat, but it's 100 percent clear that she can do much, much better than Scott.