Jenelle Evans
Jenelle Evans reportedly slammed her husband-to-be on Twitter Monday night. Pictured: Jenelle of MTV's "Teen Mom 2" attends OK! Magazine's So Sexy NYC Event in New York City on May 13. Getty Images

Just days after Jenelle Evans revealed to fans she and fiancé Nathan Griffith are no longer living under the same roof, the “Teen Mom 2” star reportedly revealed the reason for their relationship issues. In a since deleted tweet, Jenelle accused Nathan of being unfaithful, according to reports.

Starcasm and Teen Mom Junkies were able to obtain a screen capture of the post from Jenelle, 23, which accused Nathan of having a “side chick.” According to the sites, Jenelle wrote, “Next time u decide to go workout, don’t choose the same gym and side chick to go with. @GroundLevelUp couldn’t hide it for too long.” She reportedly posted the tweet Monday evening only to delete it a short time later.

Despite reportedly deleting the post, Jenelle did reveal to fans she has been depressed lately on Tuesday. The “Teen Mom 2” star shared a text message conversation she had with an unknown pal in which she admitted to feeling down.

Jenelle’s alleged claims about Nathan come shortly after her admission that she no longer live with her 1-year-old son Kaiser’s father. After writing about her distaste for panic attacks and nightmares, a fan reached out to Jenelle on July 31, teasing that sleeping next to Nathan, “a steroid crazed man,” might be causing her upset. Jenelle wrote back, saying, “He doesn’t live with me.”

Prior to making her relationship issues public, Jenelle gushed about her romance with her co-star. In a recent interview with OK! magazine, Jenelle tried on wedding dresses and said they were planning to tie the knot next summer.

Jenelle’s relationship issues with Nathan, her fiancé of six months, have been a prevalent storyline on “Teen Mom 2” Season 6. In a recent episodes the couple has feuded over everything from being late to an appointment at a lawyer’s office to an argument they had with their friends with on their engagement trip. The next installment, “Can't Trust Them,” airs Thursdays at 10 p.m. EDT on MTV.