Teen Mom 2 fans were stunned when Kailyn Lowry and Javi Marroquin admitted at the reunion that they hooked up right after his split from Briana DeJesus. But you know who was more shocked? Kail's girlfriend at the time, Dominique Potter! After seeing the news on Twitter, she responded by saying, "Wow. Lol she was actually dating me at the time… thanks for the info." She followed up with a lot of vague tweets that could all have been directed at Kail for cheating on her.

"Who knew evil girls had the prettiest face," she wrote. "Out here defending people for whatttt lol, I keep my mouth closed though." She went on to tweet about someone taking "advantage of everything I did for you girl that’s crazy." She also called the behavior "too predictable" and said to "change your patterns." This definitely seems to allude to Kail, who has long been accused of cheating on her husband, Javi Marroquin (a claim she has persistently denied).

Despite the fact that Kail and Dom broke up some time ago, she certainly seems hurt by the new information. "I let you meet my family bro. I cannot change you, so I must replace you." She also seemed to insinuate that she would have been a good partner to Kail while raising her three kids, saying, "I’m gonna be a great parent, it’s crazy."

Kail admitted that their relationship was tough because of the kids, saying, "We go out to eat, but it’s kind of hard 'cause I have kids, I have a baby. I have never gotten a babysitter and gone on a date." But now it seems like the fling with Javi, which both admitted was Kail's idea, was also to blame.

Love Teen Mom? Keep up with all of the drama by joining our Teen Mom Facebook group.

For access to all our exclusive celebrity videos and interviews – Subscribe on YouTube!