However, recently, it seemed to be much more on than off, with Kailyn even taking to her Twitter to defend Jenelle after fans started attacking her for her recent abortion.
"Everyone goes through different things. I'm pro choice and I wasn't in Jenelle's shoes :/" Kailyn tweeted when someone asked her about the situation.
So, fans were more than a little surprised when Kailyn retweeted a message this week that seemed to be aimed directly at Jenelle.
"Teen moms doing porn, 'leaking' naked pics, using abortion as birth control and people are mad cause of @KailLowry posts nursing pics #crazy," the tweet read.
Immediately, people started wondering if the two Teen Mom stars had had a falling out, but Kailyn quickly cleared the air.
"Just because I retweet something doesn't mean I mean it towards Jenelle," Kail explained. "Jenelle and I are FRIENDS. My fault for retweeting something."
It sounds like Kailyn was just trying to reinforce the last part of the message as people had criticized her for posting a pic of herself breastfeeding and she obviously didn't appreciate the attack.
Still, Jenelle did have naked pics leak recently and there was the whole abortion thing, so it sounds like there was definitely some shade being thrown in Jenelle's direction.
Do you think Kail meant to insult Jenelle?