Guy acted like his likes me, now he's ignoring me?

Anonymous
There was this boy in my school and he would stare at me, whistle, smile all the time, tease me, follow me.. and my friend and me would make fun of him since he would always make fun of me. After awhile, he would only talk to me whenever she's not around. But now, he avoids me, won't even look at me, and blocked me on msn. The other day he was staring at me for a few seconds then looked away. Did I so something wrong? please help. I feel really hurt these last few days.

thanks :)
Guy acted like his likes me, now he's ignoring me?
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