I think it depends on how you grew up. I grew up litvish and there was no way I would marry a guy I saw for 20 minutes. No way.
But then again, to people more modern than me- the way I dated might be crazy and no way would they be able to do that either. I dated my husband (he was my 7th boy) for 8 dates and then spoke about 3 times a week and texted whenever we felt like it.
So, basically, I think it depends on your upbringing and your cultural norms.