Some boys are meanER to girls when they like them. That's not the way to get them to like you back. You have to show respect OF KINDNESS.
The respect of kindness makes no sense to me, but I'm sure he was going for to show respect and kindness or respect by being kind, probably something along those lines.
Oh, for the record by the way, I just did a search for 'kindness' (ctrl + F) on the Youtube video page. Apparently more people were unable to make out what he was saying, so if you're ever wondering....