RYAN LEAVES KATY LOST IN SPACE

Cuts her loose just when she's at her lowest

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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 backfired — with critics, including fellow celebrities, calling it “tone-deaf” in light of Americans’ economic worries.