Nick Jonas has a celebrity crush, and just can’t keep his cool.

The “Chains”; singer — and “Game of Thrones“; superfan! — couldn’t help himself from stopping by BBC Radio 1’s “Breakfast Show“; on Thursday when he found out Emilia Clarke, who plays Daenerys Targaryen on the HBO series, was going to be there.

WATCH: Emilia Clarke Talks Being Treated Differently Because She’s “Got a Pair of T*ts’

During Clarke’s interview, host Nick Grimshaw surprised her by inviting Jonas to the studio. When the 23-year-old pop star walked in, he nervously put on his headphones and joked, “You really set me up for failure to not look cool at all.”;

“I’ve actually already met Emilia,”; he revealed, as his cheeks started to get a little rosy. “At the Oscars after-party. It wasn’t like, “I’m a fan of your show.’ Actually, that was part of it, but I was like, “I’m also a fan of your Instagram.’ Which I don’t know if it’s a weird thing to say.”;

A beaming Clarke was clearly flattered by his compliment, insisting that it was “an amazing thing to say!”;

“The minute I walked away I was like, “That sounded stupid,'”; he recalled. “That was maybe after one or two cocktails that I said that. It was highly embarrassing.”;

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But when asked why he likes the 29-year-old actress’ Instagram so much, he had no trouble listing off the reasons.

“She posts great stuff,”; he explained. “Like insight into the show, behind-the-scenes pictures and stuff.”;

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Watch the full clip below.

Following the interview, Jonas took to his favorite app — Instagram, of course! — to share a collage of the hilarious trio.

“Two Nicks and a queen of dragons,”; he captioned it.

Two Nicks and a queen of dragons. #got @nicholasgrimshaw @emilia_clarke

A photo posted by Nick Jonas (@nickjonas) on Jun 2, 2016 at 1:51am PDT

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WATCH: Emilia Clarke Adorably Fangirls Over Matt LeBlanc

Jonas isn’t the only one who’s gotten flustered over a sexy star, however. Last month, Clarke was a guest on “The Graham Norton Show”; with Matt LeBlanc. While sitting right next to him, she adorably confessed she had a massive crush on the former Friends actor.

Watch the video below to see her giggle and blush uncontrollably.