Corey Simms and Leah Messer-Calvert's four-year-old daughter, Ali Simms, suffers from a rare and incurable form of muscular dystrophy. However, while Leah has accepted the diagnosis and is preparing for Ali's future in a wheelchair, Corey is having trouble digesting the news.
In a March 3 sneak peek, courtesy of Us Weekly, Corey and Leah are seen discussing their issues with Corey's new wife, Miranda Patterson, and Leah's husband Jeremy Calvert.
"Ali needs that head start over other kids her age to kind of catch up, because it's going to take her a little while to adjust to the environment," Leah tells Corey in the preview.
In response, Corey seems confused. "That's hard to believe," he tells his ex-wife.
Then, when Leah expresses concern that Corey hasn't accepted the diagnosis, he comes right out and says, "I don't think I'll ever accept it, honestly. I don't think I will. Even if it's the doctor saying it and she's wheelchair-bound when she's 14, I still won't...I don't want to accept it, and I probably won't."
Luckily, despite his hesitancies about Ali's diagnosis, Corey says that he will do whatever it is that she needs from him, whenever she needs it.
For more of Corey Simms and Leah Messer-Calvert, tune into Teen Mom 2 every Tuesday night at 10 p.m. on MTV.