Nah, it means they're friends. What is with some guys and their childish inability to show affection? Two girls hug and nobody bats an eye, people just attribute it to being emotional blah blah blah, two guys hug, they have to shout disclaimers and act "manly". Makes em seem insecure. It's a turn off is what it is. Unless one of the dudes started making out with the other, hugging means they're probably good friends.