Matthew Lewis posted this adorable throwback photo of him and Sarah Lancashire from way before Happy Valley

Matthew Lewis posted this photo of him posing with Sarah Lancashire while filming Happy Valley series two. He looks incredibly youthful and vibrant doesn't he?

https://www.instagram.com/p/BDDZVlnkQ1L/

Of course, this is from a little bit before Happy Valley was filmed. In fact, it's likely to be around the time that Lewis played Neville Longbottom in the Harry Potter films. Or perhaps even before they ever started.

So despite playing the very troubled Sean Balmforth in the BBC1 thriller alongside Lancashire's Catherine Cawood, Lewis is clearly more of a joker in real life.

And a bit cuter, too...