The feud between Kailyn Lowry and Briana DeJesus shows no sign of letting up. If anything, it may be worsening by the day.
In fact, last night's Teen Mom 2 reunion show gave us a clear indication of just how intensely these two dislike each other.
It all started with rumors that Briana is dating Javi Marroquin.
But now it appears the co-stars have numerous reasons to distrust one another, and the mutual ill will goes even deeper than fans thought.
Check out our full rundown of the MTV co-stars' rapidly escalating feud, including last night's developments, in the gallery below:
Kailyn Lowry: Suspicious From the Start?
When it was first announced that Briana would be joining the cast of Teen Mom 2, her co-stars were reportedly less than pleased. Briana believes the reason for their reluctance was that Kailyn had sown the seeds of mistrust.
Briana and Kailyn: Best Frenemies?
At one point, it was rumored that Kailyn and Briana were close friends. Fans even alleged that they coordinated their plastic surgery procedures.
Now We Know Better
It now appears that while they knew one another and followed each other on social media, Kail and Briana were never actually close. The same can't be said of Briana and Javi Marroquin...
We don't know exactly when Javi and Briana hit it off, but they quickly became more than friends.
The Rumor Stage
At first, the co-stars would do club appearances and post on one another's social media pages, but would deny that they were romantically involved.
These days, we know that Javi and Briana are dating (or at least hooking up). And it seems the relationship has really complicated Briana's relationship with her co-stars...