You don't know what you've got until it's gone; the grass is always greener; the alcoholic baby daddy suddenly looks bangable again now that he's hooking up with a model who's half your age ...
We've all heard the cliches before.
(Okay, so that last one might not be in widespread use ... yet.)
But apparently, Kourtney Kardashian is learning the hard way this week that sometimes popular expressions catch on because they're just so damn true.
As you may have heard, Kourt's ex, Scott Disick, is dating Sofia Richie, and against all odds, it looks as though the relationship has gotten very serious.
Scott and Sofia recently celebrated a full year as an official couple, and given the skeeviness of a mid-thirties father of three banging a teenager, they were probably dating for a while before they decided to go public.
At first, Kourtney seemed pretty chill about the situation, but they may have been a result of her now-defunct relationship with Younes Bendjima.
These days, however, Kourtney is semi-single.
She may or may not be dating Luka Sabbat, but whatever the case, it seems Kourt remains hung up on Scott.
“Kourtney is impressed with how much hotter Scott is looking again these days,” a source close to the reality star tells Hollywood Life.
“He’s taking good care of himself, he’s looking younger and more like the old Scott she first fell in love with."
Yes, it sounds like Kourt's looking for some casual ex sex.
However, that doesn't mean she's looking to take Scott back on a full-time basis.
"But as much as she can get nostalgic at times she’s not talking about taking him back," the insider claims.
"She swears she’s not interested in going there at all.”
As for Kourt's relationship with Sofia -- the insider says there isn't one:
“Kourtney is definitely not prepared to build a friendship with Sofia at this point,” says the tipster.
“She is still adjusting to the idea that Sofia spends time with her kids and that has been hard for her to accept at times.”
And it seems Sofia is equally uncomfortable about the situation:
“Sofia knew exactly what she was getting into when she started dating Scott," says the source.
"She understands that Scott had another life, and a family, before they started dating ... Sofia is very confident in her relationship with Scott and realizes his kids come first."
Sounds awkward, but this is the best scenario Scott could hope for.
If Kourtney and Sofia ever got together and started talking, it probably wouldn't be long before they both realized they can do way better than Scott Disick.