What's up with the mixed signals?

I like this boy, he is 19. I’m older… He gives me mixed signals. He blocked me one day, after he thought I did something I hadn’t, he invited me over, then invited me over again, then ignored me when I replied. What’s up with all the mixed signals? This is more of a rant than a question. But I’d like to ask—- why would you invite someone over twice in a day and then ignore them? He did it again last week. If you don’t want to see me, do not invite me over.