I've gone on 3 dates with a guy, is it bad I dont know his last name or if he wants a relationship or not, he never talked about it. What do I do?

I do like this guy, what are standard expectations at this point that I should look for if he wants a relationship. I don't know if he wants one, but I do, what should I look out for, do and how can I communicate this without scaring him?

I've gone on 3 dates with a guy, is it bad I dont know his last name or if he wants a relationship or not, he never talked about it. What do I do?
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