Game of Thrones star Kit Harington has shared an amusing and slightly embarrassing memory from the set, involving a young Bella Ramsey, who helped him remember his lines during filming.

Before starring in HBO’s The Last of Us, Bella Ramsey made their television debut as Lady Lyanna Mormont in the final three seasons of Game of Thrones. In a recent conversation with Harington for Interview Magazine, the two actors looked back on their time working together — including a moment that left Harington humbled.

“I don’t know whether you remember this, but I remember it quite vividly and have some remorse for it now,” said Ramsey. “During that scene I was mouthing your lines to you… Kit’s struggling with his line and I know it, so let me just mouth it to him.”

Harington responded with humor, “I do remember you helping me out and it being quite humiliating. But yeah, thanks for that. I’ve probably chosen to forget it.”

Despite the awkwardness, Harington assured Ramsey that it wasn’t annoying. “If anything, I was like, ‘Oh god, I’ve got to up my game.’ I came in thinking I’m opposite some child — and then that child actor is wiping me off the screen,” he admitted.

The exchange highlighted the mutual respect between the actors and offered fans a glimpse behind the scenes of one of television’s most iconic shows.