You may want to sit down for this, but brace yourselves ...
Teen Mom 2 star Jenelle Evans has been arrested.
Knock us over with a feather, we know. This time, the train wreck allegedly assaulted the new girlfriend of her ex-fiance, Nathan Griffith.
Jenelle and Nathan broke up several times over the course of their relationship, but it seems that things are really over for good this time.
TMZ is reporting that Griffith showed up to Jenelle's Myrtle Beach, South Carolina-area home to gather up his belongings today.
For some reason, he decided to bring his new girlfriend.
In news that comes as a surprise to no one ever, soon enough Jenelle allegedly threw a glass at the girl, striking her in the head.
Reps for Jenelle say that Nathan intentionally provoked Jenelle by bringing the girl into the home that she and Nathan once shared.
The couple has a tumultuous, emotional and violent history together, and Griffith was arrested for domestic violence back in March.
Several sources later claimed that Jenelle was the one who initiated the violence in that case, and charges were later dropped.
She and Griffith got back together shortly after he was released from jail, in fact ... only to break up again a couple of weeks later.
Evans and Griffith have a 1-year-old son together. Evans also has a child from a previous relationship, but her mother has custody.
If you're keeping track at home, Jenelle has now been arrested at least nine times (see gallery above for her greatest hits).
Speaking of "hits" ... yesterday's victim might be lucky she got away with just one glass flung at her. Just ask Brittany Truett ...