Can or does a guys personality change how you feel about him?

Say there is this guy that you think you wouldn't really take a second look at if he was walking down the street and then you get to know him and find out he's really sweet and a caring guy would your opinion about him change? Like would you date him?Can or does a guys personality change how you feel about him?
if he's really nice then yeah i would really consider dating him. personality counts for a lot in my book

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