"Teen Mom 2" star Briana DeJesus' co-stars were reportedly shunning her over the weekend when the cast gathered together in California for the big reunion special. Briana, who posted photos of herself hanging out with Jenelle Evans, another cast member seemingly shunned by Kailyn Lowry, Chelsea Houska, and Leah Messer, says that the cast has taken sides against her, and fans believe it's likely due to the rumors that she's dating Kailyn's ex-husband, Javi Marroquin.

'TM2' cast members take sides against Briana during rumors that she's dating Javi Marroquin

According to In Touch Weekly magazine, Briana DeJesus took to social media to reveal that she had spent a lot of time with Jenelle Evans during the weekend because she was the only one who wasn't acting like a high schooler. The newest member of the "Teen Mom 2" cast claimed that Jenelle wasn't "acting fake" and "choosing sides" like the other women were. It seems safe to say that Kailyn Lowry, Chelsea Houska, and Leah Messer stuck together, and likely think it's not cool that Briana has been spending time with Javi Marroquin, although they have been very good friends for years.

Jenelle caused some big drama among the cast members.

Meanwhile, Jenelle Evans and her husband, David Eason, reportedly caused a lot of drama over the weekend. It all started when Jenelle allegedly refused to stay at the same hotel as the rest of her "Teen Mom 2" cast members. Jenelle reportedly claimed the girls were treating her poorly, and that after the Las Vegas shootings she didn't feel comfortable staying in a hotel.

Production then set up an Airbnb for Jenelle and David to stay in while her sons Jace and Kaiser stayed at the hotel with her mother Barbara and ex-boyfriend Nathan Griffith. The cast were reportedly not happy about Jenelle getting special treatment from MTV.

David pulled a knife

Later, at a "Teen Mom" end of year party, which was attended by the casts of "Teen Mom 2" and "Teen Mom OG," Jenelle Evans' husband, David Eason, allegedly had too much to drink and was cut off by production at the bar.

Upon learning that he would no longer be served alcohol, David reportedly got angry and attempted to storm off the set when he found himself tangled in a bunch of balloons. David then allegedly took out a pocket knife and began to slash the balloons, making everyone in attendance at the party very uncomfortable, and the network worried about the safety of the cast and crew upon the revelation that a weapon had been carried into the studio.

Huge fight happened backstage at the reunion

Then, behind the scenes of the "Teen Mom 2" reunion taping, Jenelle reportedly got into a big fight with Nathan Griffith's girlfriend, Ashley, which started after she allegedly saw Ashley and her mother Barbara share a hug.

Things got very heated between the women with producers stepping in between them, and of course Nathan and David also got involved in the altercation. Allegations were tossed around, and cameras reportedly caught the whole thing. Since the altercation took place in the hallway of the common area, many of the star's children witnessed it, including Jenelle and Nathan's son, Kaiser, who was allegedly taken away from the scene by one of the cast members. Meanwhile, the cast of the show was so upset by the fight happening so close to the children that they are now reportedly concerned about bringing their kids with them to film reunions and specials.

So much drama

It looks like it was a very dramatic weekend for both Briana DeJesus and her "Teen Mom 2" co-star Jenelle Evans.

However, it remains to be seen if any of the conflict among the cast members will be shown on the MTV reality series, or if Briana and Javi's relationship will be addressed during the "Teen Mom 2" reunion.