Kailyn Lowry has discovered news of Javi Marroquin's new relationship and apparently, she's unconcerned.

Just as the finalization of her split was confirmed, the Teen Mom 2 star's ex-husband confirmed his new romance with Cassie Bucka and after witnessing several photos of the couple online, Lowry called out her ex -- and his relationship.

"Remember guys, you have to blast your brand new relationship all over social media or it ain't real," she tweeted, according to a report by Radar Online on Monday. Then, she captioned a photo of herself lying down and wrote, "How many f***s does Kail give tonight? Zero."

Following her posts, a source spoke to Radar Online and explained, "She really doesn't care about it... She was poking fun at the fact that it's being blasted all over social media and it's brand new."

However, when the reality star's former friend, Christina "Peach" Pietrobon, called Lowry "bitter" after learning of her comments about her former partner, she shot back at the woman and accused Marroquin, the father of her 3-year-old son, of having an affair.

"Let's not forget, I filed baby girl," she tweeted. "Did your a1 day1 tell you about his affair or nah? But I'm the bad guy right?"

To see more of Kailyn Lowry, Javi Marroquin and their co-stars, tune into the Teen Mom 2 season eight premiere on Jan. 2 at 9 p.m. on MTV and check out a sneak peek at the new season below.

Tags: kailyn Lowry Javi Marroquin MTV Reality TV Teen Mom 2