How common is it for a guy to ask a girl for coffee if he isn’t sure if he’s attracted to her (only talked to her through online so far) ?

Would you ask a girl out if you wasn’t sure if you’re attracted to her. You have seen couple pictures of her.
How common is it for a guy to ask a girl for coffee if he isn’t sure if he’s attracted to her (only talked to her through online so far) ?
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