This is a question for the ladies, since I think first dates are interesting and usually where a connection makes it or breaks. But I think it's a mystery to men why a woman would agree to go on a date with a guy then change her mind completely later.

In your experience, what are the reasons that first dates with men didn't work out?

"didn't work out" means no second date or further in person meetings. You basically stop seeing each other.

Also, for this discussion, only consider a "first date" as some in person outing that you both acknowledge is a date, and this is not a person you have had sex with (since a hookup converting to a first date is very different)