It's been quite the year for Kailyn Lowry!

Not only is the Teen Mom 2 star expecting baby No. 3 with her third baby daddy, Chris Lopez, but she's also in a fierce custody battle with her first baby daddy, Jo Rivera.

In a new sneak peek of Teen Mom 2 — returning to MTV on Monday, July 17 — the 25-year-old goes head-to-head with Jo for custody of their son Isaac, 7.

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Back in March, the former couple revealed to Us Weekly that they were finally working through their issues.

"Jo and I hated each others' guts…we were not good friends [and] we barely co-parented," Kailyn said of her former beau.

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"Jo has shared his concerns with me and we are working through them. But he has been supportive overall and just said we will figure it all out. Babies are blessings,” she told the mag.

Yet with the custody battle looming, fans are wondering if they're as amicable as they say.

Only time will tell!

Teen Mom 2 returns Monday, July 17 at 9 p.m. on MTV.

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Scroll through our gallery below for photos of Kail on her recent babymoon!