I went on a fair few unspoken dates, that were kinda "um ah sure we'll head down to that show there and see what happens" kind of of arragements, but I always sort of thought of them as dates that no one wanted to call dates for fear of rejection.
I have been on loads of these. It's only after the fact that you realise the person fancied you. Why else would they have been there?
But I also meet women to do stuff and I don't fancy them. I just enjoy their company.
That's usually a whole other set of problems.