Frankly, I wouldn't be surprised if Jesus was married. Here's why:
1. In real life, children as young as 15 would be married by their families by other families for whatever reason--land, cattle, whatever.
One could say that Mary and Joe just never did that for his son, and while it's not impossible that could be true, but it's really improbable.
2. Frankly, every society has had many sordid, dark secrets in their pasts, even the Church. From the zealots during the Crusades, to allowing the Nazi's to do their thing, the Church has made as much mistakes in the past as any of us.
And don't point fingers at me saying I'm some sort of "faithless athiest" or some s**t. While I don't really like organized religion much (I'd rather study my options, see what's best for me, and follow it on my own terms), I respect those who have it.
But, maybe it's my perspective of it all, but when I read or hear anything about Jesus Christ, I really don't see a Massiah or the Son of God--I just see a person, a very influential one, maybe even someone who had the extraordinary powers the Bible claims he has, but a person nonetheless; and frankly, I wouldn't give a crap if he was married or not.