What should I do everyone?

I was new to a school, and became friends with a girl. I told her I thought this guy was cute and then come to find out he used to like her but she never liked him back and she never persued him. I never went past being friends with him the entire school year because he was in a relationship. but now that he isn't in a relationship he is expressing his interest in me. and I've liked him for awhile. would I be a bad friend to talk to him?
What should I do everyone?
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