ST. LOUIS, Sept. 19 – The husband in a real-life Fault in Our Stars couple has died in a St. Louis hospital, his family said.

Dalton Prager died Saturday at Barnes-Jewish Hospital in St. Louis after a lifelong battle with cystic fibrosis.

Local media and CNN described the Pragers as similar to the leading roles in The Fault in Our Stars, a young adult novel by John Green about a tragic young couple with cancer who fall in love.

The Pragers were apart in Dalton Prager’s final days because Katie Prager was in hospice care in Flemingsburg, Ky., her mother, Debra Donavan, told CNN. They communicated over FaceTime.

“Dalton fought a long hard battle with cystic fibrosis,” Katie Prager posted on Facebook.

” gave me some of the best years of my life,” Katie Prager told CNN. “I’d rather have five years of being in love and just really completely happy than 20 years of not having anybody.”

Dalton and Katie met in 2009 and married two years later at age 20.