Jenelle Evans' latest relationship drama is in full effect!

The Teen Mom 2 star, who is expecting her second child — her first with boyfriend Nathan Griffith — has taken to Twitter with her latest relationship grievance.

Jenelle, who isn't one to mince words when she's frustrated — a fact illustrated by her son Jace's liberal dropping of the F-bomb as Teen Mom cameras roll — got the subtweets going once again and it seems as though she's once again directing her ire at a familiar target: Nathan's ex.

Jenelle tweeted, "Hahaha stupid girl, thirstiest you have ever been … Here's some water" early on Thursday morning at no one in particular, although the reality star has a well-documented history of making her grievances with her significant others — and their former girlfriends — known.

Jenelle went on to retweet two other accounts, adding, "'In a relationship' means back the f—k off" and "Stay faithful or stay single" to her list of fighting words.

While Jenelle's other relationship dramas, particularly those with ex-boyfriends Kieffer Delp and Gary Head, have played out in front of Teen Mom cameras, her latest sparring partner — Nathan's ex and baby mama number one, Brianna Dorris — has taken the brunt of Jenelle's anger in 140 characters or less.

On January 18, Brianna attempted to make her side of the story known, tweeting, "Jenelle. You broke me and Nathan up. That's the truth. We were living, sleeping and raising athena together. Believe whatever Nathan tells you … you literally ruined my life and family," to which Jenelle replied, "He couldn't stand u."

It looks like old habits die hard for jealous Jenelle — let's just hope she can get her act together before baby number two arrives.

Do you think Jenelle should make peace with Nathan's ex?

Source: Twitter