Sweet victory. In a preview for the Monday, March 28, episode of Teen Mom 2, Corey Simms learns that he has won primary custody in the battle with ex-wife Leah Messer over their 6-year-old twins, Aliannah and Aleeah.

"You got virtually everything you asked for," lawyer Rusty Webb tells Simms in the sneak peek. “You’re going to be primary caretaker, primary legal custodian. [Leah] no longer has the decision making, it’s shared now. So you both have to share it.”

As seen on season 6 of the MTV series, Simms wanted more custody of the daughters he shares with Messer, 23, after she allegedly repeatedly failed to bring them to school on time and missed important doctor’s appointments for Aliannah, who suffers from a rare form of muscular dystrophy.

“We were hoping that if she only has one day to take them to school, she can get them to school in time the one day a week that she has them,” Webb explains to Simms in the clip. “So you’ve got them Monday through Friday. She’s got them Friday through Monday.”

Upon hearing the news, the reality personality is nearly speechless. Holding back tears, he tells his attorney that he and his wife, Miranda, "understood that we wouldn't really have a fun time —this is the hard time.”

“But this is what's going to build them to be a mature adult that's going to succeed in life and want to go places,” Simms, 26, continues. “I want them to talk about college and what they want to do, that's what I want. So this is why I'm glad this went their way."

"It's amazing. We've fought for so long. I mean, it's hard to hold back the emotions,” he adds. “I really didn't expect it, you know? But for the girls' sake, I'm tickled pink that it happened."

Back in October 2015, Messer (who also has a 3-year-old daughter, Adalynn, with ex-husband Jeremy Calvert) sat down with Us Weekly for a no-holds-barred interview where she called Simms’ fight for primary custody “a slap in the face.”

At the time, the mom of three refuted Simms’ claims about making her kids late to class.

“I talked to the superintendent,” she told Us, “and I’m sending them the [time-stamped] pictures I took to prove the girls were not tardy. They’re going to take them off.”

“I feel like they should have both of us in their lives,” she added of her girls, who she calls “Ali” and “Gracie.” “At the end of the day, my kids are going to be happy, and I don’t care what I have to do to make them happy.”

Watch the video of the sneak peek above. Teen Mom 2 airs on MTV Mondays at 10 p.m. ET. 

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