Fandoms collide! Richard Madden, who plays Robb Stark in hit HBO series Game of Thrones, has said that he would love to appear in the British sci-fi show Doctor Who. In a new interview, he also spoke about his reaction to girlfriend Jenna-Louise Coleman’s casting as the new companion.

Speaking to Red Eye Chicago, Madden confirmed that he and Coleman are dating. When asked if their romantic connection could give the actor an opportunity to appear in Who, he said, “Maybe! I’d love to be in Doctor Who. It’s one of my favorite shows. I love that thing.”

He also talked briefly about his reaction to Coleman’s casting as the new Doctor Who companion. “I think I was more excited than she was,” he revealed. “I was like ‘What?!'”

Would you like to see Richard make a guest appearance in Doctor Who alongside Coleman?