Don't men usually date a woman for a while before asking her to be his girlfriend?

I've been talking to this guy I met on a dating app last month. And he is now asking me to be his girlfriend and we haven't even met yet. We've even talked about sex I am the one who mentioned it not him. Now he's asking me to be his girlfriend. We are planning to meet in a couple of days. But I don't know what to think.
Don't men usually date a woman for a while before asking her to be his girlfriend?
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