<p>Wait as long as you feel comfortable. At my first date with my (now) wife, she never showed up. I think I waited about 45 minutes. Got back home, contacted her and she had a crisis at work. We rescheduled and she showed up and we hit it off. Even if she doesn't show I would follow up.</p>
First Meetup
At first meet up location and date is 20 minutes late with no response. Did I wait too long?
Someone I met here and chatted with for a couple weeks.

