Nick Jonas says he is inspired by his old friend Selena Gomez following her recent kidney transplant, saying he had no idea about the surgery until she announced it to her fans.
"I was just as surprised as everyone else when I woke up and saw her Instagram," the "Jealous" singer told SiriusXM's Hits 1 during an interview on Friday.
"Wow, just incredible — and the strength she's shown through all that is amazing and inspiring."
13 Songs You Gotta Hear on #NewMusicFriday
View Story"I'm pumped for her," he continued. "I'm happy to see that she's doing well, it seems, and that she was able to get the surgery. And her friend helping her is a beautiful thing. It's all amazing."
Gomez surprised her supporters with the announcement on Thursday, revealing that complications from chronic autoimmune disease lupus forced her to lay low and put off publicly promoting her new singles "Bad Liar" and "Fetish" until she recovers.
"There aren't words to describe how I can possibly thank my beautiful friend Francia Raisa," she wrote. "She gave me the ultimate gift and sacrifice by donating her kidney to me. I am incredibly blessed. I love you so much sis."
Waiting for your permission to load the Instagram Media.
Jonas and Gomez say they had a "puppy love" relationship in 2008 when they were both Disney Channel stars. They have remained good friends since then, occasionally sparking new dating rumors -- but it was Gomez's current boyfriend The Weeknd who was at her side during the medical emergency, scheduling his performances around her operation so he could be with her, according to PEOPLE."It was a super serious operation," a source told PEOPLE, "and all her friends were worried."