Kourtney Kardashian

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.

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.

As evidenced by the Kim Kardashian sex tape, at least one cast member on Keeping Up with the Kardashians knows a thing or two about how to handle a rod.

This was relevant on Sunday night because former Major League Baseball superstar Alex Rodriguez, often referred to by the nickname "A. Rod," made an unexpected cameo on the popular reality series.

Keeping Up with the Kardashians took Kim and Kourtney to Japan on Sunday night.

And the sisters brought with them many suitcases, changes of outfits... and lots of hard feelings.

Against all odds, Scott Disick is still dating Sofia Richie.

So you'd think the Lord would be done obsessing over his baby mama, Kourtney Kardashian, and would instead be focused on his cradle-robbing relationship.

If you're a fan of Keeping Up With the Kardashians, you may have noticed that Kim and her sisters spend a surprising amount of time eating.

We don't mean to say they take in more food than your average person -- in fact, they probably consume far fewer calories than most of us.

Kanye West needs many things in life.

Attention. Professional mental health assistance. A clue.

Kourtney Kardashian and Kendall Jenner may be the hottest in their family, but they have something else in common.

That something is threatening to tear the two of them apart with jealousy.

It's been over two years since Kourtney Kardashian and Scott Disick ended their relationship, and everyone seems to be in agreement that it was the best move for both parties.

Everyone that is, except for Kourtney's most famous sister.

Breaking news:

Kylie Jenner has given birth!

Luka Sabbat stars on the Freeform comedy Grownish.

Which is ironic.