What does it mean when a guy wants you so bad?

I have crush on a guy who was ingoring me all the time and after a year I see him he and his friends start give me some attentions and they also make me jealous and they are so silly with me and some of this signs appear they like me! but then I start ingoring him and his friends and Now I see this guy he wants me so bad!

What does it mean when a guy wants you so bad?
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