<human>: I recently had feelings for a guy after a couple of months of friendship. I thought he was amazing: intelligent, witty, good taste in music, similar interests, same sense of humor, etc. But he had some self-confidence issues. He would confess feelings of inferiority; he didn't feel attractive physically or mentally. 

I spent another 4-5 months reassuring him that he was amazing, that any girl would be lucky to have a guy like him. I saw him really come out of his shell, so much in fact that he professed feelings for two other girls within a time of 3 months, and when he was talking to them, I ceased to exist. 

Even after I told him how I felt, he simply told me that he didn't want to date me, with no explanation as to why. Since we got along so well, I can only assume it's because of the way I looked (I guess average became his "below average" ). 

Did I ruin this for myself? Did I swell his ego enough to push him out of my league, because it sure as hell feels like it? Have you ever changed someone in a bad way? Now he's dating a girl that he used to tell me was annoying, and I can only assume it is because she has "above average" looks.

Provide a brief overview of the text.
<bot>: Convinced a guy he was amazing though he was initially correct when he told me he was a piece of shit.