Oh, darling, Some guy's just don't understand, or think the way girls do. It doesn't mean he's intentionally leading you on. (And this is coming from a female, trust me.) Guys tend to be blind to relationships and "asking someone out" and think just on making friends. He might be alittle confused if you mentioned being his girlfriend if he didn't make that 100% evident when asking you to the dance, thus why he's avoiding you now. In the future, just go along and enjoy yourself, because that's all that matters anyway.