Katy Perry Ghosted by Former American Idol BFF Ryan Seacrest Amid Personal and Career Challenges

Onetime BFFs Ryan Seacrest and Katy Perry promised to stay in touch after she left American Idol, but the “busiest man in Hollywood” has little time for her now — just when she needs him most.

“Ryan took Katy under his wing during her years on the show,” says an insider. “They used to be pals, but now it seems he doesn’t want to know her.”

Meanwhile, the Teenage Dream singer, 40, could use a shoulder to cry on after her 11-minute, all-female space flight on board the Blue Origin rocket drew criticism, including from fellow celebrities, calling it “tone-deaf” in light of Americans’ economic worries.

Olivia Munn dubbed the stunt “gluttonous,” while Lily Allen called the voyage “so out of touch.” Olivia Wilde captioned a picture of space cadet Katy kissing the ground after she stepped out of the rocket: “Billion dollars bought some good memes I guess.”

Adding to Katy’s woes, her latest album, 143, underperformed, and she’s struggling to sell tickets to her Lifetimes tour.

So it’s got to hurt that Ryan is ghosting her after she has texted and called him repeatedly, says a insider. “It’s been a rough time for Katy,” adds the source.

“She needs all the support she can get from people who pretended to be her friend, like Ryan, but it’s not coming and it’s upsetting for her.

“She doesn’t know what she did to deserve this from him. Sadly, he’s too busy with his ever-revolving door of gigs to have time for needy people, least of all Katy!”

In addition to hosting American Idol, Ryan, 50, has his duties on Wheel of Fortune and his KIIS-FM radio show, so consoling the California Gurls songbird isn’t anywhere near the top of his to-do list.

“He’s got too much going on and he doesn’t exactly have it easy either, so he’s not going to be that sympathetic to Katy,” the source says.