He told Parade magazine: "The real trick is putting yourself around people you admire. That's why I married my wife. I locked in the brightest light in the room.
"My wife and I have an agreement in our marriage, and part of that contract is that we are going to shine our lights on each other. My relationship with Demi is so solid, thank God, and we're so communicative about the way that we're feeling, that we don't allow space to come between us. I definitely believe that if you stop working at relationships, they go away."