STYLETHREAD -- LET'S TALK SHOP!

I'd totally confront him. I, personally, find email to be an easier way to communicate hard things but it's not the most efficient or straight-forward. Maybe a phone call if you're up for it? An IM conversation?

But definitely ask him what's up, even if just from a friend point of view. If someone was a friend of mine, extra feelings or no, I'd definitely want to know why they were suddenly standoffish.

Let us know what happens!