Just when it looks like they're back to being close friends, some cryptic messages start popping up on Twitter and the friendship seems to fall apart again.
Now, it looks like the two have once again mended fences as Kailyn visited one of Jenelle's favorite vacation spots, Myrtle Beach, over the weekend and Jenelle joined her.
Kailyn Instagrammed a photo of the two of them with another friend and captioned it "Dirty Myrtle," where she appears to be trying to hide her baby bump behind a chair.
While the girls seemed to get along just fine, the trip didn't exactly go off without a hitch.
"Just got stung by a jellyfish. And we all spotted 2 sharks at the beach!" Kailyn tweeted this morning.
As for Jenelle, she's made no mention of the trip on her Twitter feed, but she has posted some new Vine videos of her boyfriend Nathan shirtless riding a mechanical bull.
Why, you ask? Your guess is as good as ours...