Kailyn Lowry is reportedly up in arms over Javi Marroquin's potential new romance with their "Teen Mom 2" co-star, Briana DeJesus. After the rumored new couple enjoyed spending time with one another in New York City in September, Marroquin traveled to Florida for a family vacation and met up with DeJesus yet again.

During a new interview, Lowry is weighing in on the potential romance between Marroquin and DeJesus, who joined the MTV reality show earlier this year as the fifth Cast Member, and revealing that she is doing her best to mind her business as Marroquin continues to be seen with their newest co-star. Days ago, Lowry told Radar Online that if her sons, seven-year-old Isaac and three-year-old Lincoln, are having fun, she is happy for them.

Kailyn Lowry shares son Isaac with her former boyfriend, Jo Rivera, and her son Lincoln with her former husband, Javi Marroquin. Lowry and Marroquin parted ways in May 2016 and their divorce was finalized later that year.

Has Kailyn Lowry spoken to Briana DeJesus?

According to the longtime reality star and mother of three, she doesn't believe that her MTV reality co-star needs to ask permission to spend time with her ex-husband. That said, she does think it would be appropriate for DeJesus to communicate with her if her relationship with Marroquin resulted in the couple sleeping in the same room in front of her kids.

Kailyn Lowry and her ex-husband are headed to 'Boot Camp'

According to Lowry, her relationship with Marroquin has been up and down since their split in May of last year and in an effort to better co-parent their three-year-old, they signed on to appear on WEtv's "Marriage Boot Camp: Reality Stars," which premieres later this month.

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“We didn’t know how to communicate,” Lowry said.

During an interview last month with OK! Magazine, which was shared by Radar Online days ago, DeJesus said that while she and Marroquin are just friends at the moment, she isn't against the idea of a future romance with her co-star. Also during the interview, DeJesus said that she was expecting a visit from Marroquin in Orlando.

As for Marroquin, he told Radar Online that he was open to dating DeJesus and noted that she and her family are very cool.

To see more of Kailyn Lowry, Javi Marroquin, Briana DeJesus, and their co-stars, including Jenelle Evans, Leah Messer, and Chelsea Houska, tune into new episodes of "Teen Mom 2" on Monday nights at 9 PM on MTV.