Emily and I moved in May, while Liam stayed in Erie to finish out the school year with his dad. When we all moved in together in July, I'll admit I was anxious. The boys had spent time together, and seemed to get along, but living together (and sharing a bedroom) is a whole different can of worms.
The boys have taken to each other as if they've always been together. They refer to each other as "brother," and they're almost always up to something.
So it's very nice for me to see them enjoying the fun that having a close sibling can bring. And I'm thinking it's pretty cool for them, too.