'Teen Mom 2' Kailyn & Jenelle Feud Gets Nasty: Jenelle Posts Kailyn's Phone Number On Twitter!

The Teen Mom 2 feud between Kailyn Lowry and Jenelle Evans has blown up to epic proportions. After Kailyn made light of her costar's mystery sickness, Jenelle shot back at her MTV castmate by revealing Kailyn's phone number to her over 1 million Twitter followers!

"Can't sleep. Call all the specialists in NYC, LA, Miami, etc. #mysteryillness call The Doctors tv show...." Kailyn tweeted (then deleted).

"Jenelle... You can't take a joke?" Jenelle shot back. "Well here is a joke... Everyone call Kail..." At the end of that tweet was Kailyn's phone number.

A fan captured the exchange here:

However, according to Radar Online, their nasty back and forth didn't stop there.

"Your attitude will kill you one day. No wonder you feel the world's against u... So you pick on me?" Jenelle continued writing.

Then after the North Carolina mom reminded Kailyn, "We will see each other next week," for the Teen Mom specials then the Love Is Bubblegum replied, "I'll try to be nicer. Guess my jokes aren't funny."

As MStars News reported, the fight between the costars originally exploded after Jenelle accused another castmate, Chelsea Houska, of copying her with a website of her own. Kailyn then got involved with a sarcastic tweet slamming Jenelle, "They say imitation is the best form of flattery... It's also flattering when someone thinks you're copying them. Sorry babe, but no."

"There is a lot of hate going on," a source told Radar. "Jenelle doesn't speak to Kailyn anymore. She doesn't speak to Chelsea anymore. They leave her out of everything."

"There is a lot jealousy," the source went on. "They see Jenelle is in the spotlight and that she is working on branding herself a lot."

Do you think the Teen Mom 2 frenemies will ever be friends again?