Are innocent guys a turn off?

I'm 19, never touched /kissed a girl. I'm confident is talking to girls and in myself, but i've never had a girlfriend because I used to have very low self esteem which I thankfully got over. I get told i'm sweet and a really nice guy all the time, however i'm not a pushover and don't bow down to other peoples commands nor do something that I don't want to do. I tend to melt in the background in large groups. :p Is this a turn off?

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