LA Times has a new interview up with Matt Lewis where he talks about Harry Potter and more!

JP: How’s the relationship between all of you actors who have grown up together on the set?

ML: Well, people ask me that question all the time.  And you’d expect me to say ‘Oh yeah, everyone gets on great’ — but no one really believes me.  You know, if you stick a lot of people together at such a young age and for such a long time, you automatically expect there to be arguments — you expect there to be fallouts and for people to not get on.  But somehow, remarkably, we all just get on so well.  It’s been a fantastic nine years really, and I’m looking forward to the next couple.

We spend time with each other off the set.  We like the same sorts of music, we all have the same sort of sense of humor and comedy likes … we just get on so great.  I think it really shows on camera.  You know when James and Oliver Phelps, who play the Weasley twins, and Rupert, who plays Ron, when they’re in scenes, a lot of the banter that they have as brothers is ad-libbed, and they can do that kind of stuff because they just get along so well.