Indigo, don't beat yourself up about this date. Truth is you just learned some things, about this guy and about yourself.

He was thinking more about himself when he mentioned hiking up that steep terrain. Yes, he should have realized you were not really dressed properly to go along with that. And you wanted to go for it and please him even though you were not dressed properly. You should have instead answered that you would love to try it another time when you have the right clothes on to do so.

Chances are he is probably a bit embarrassed as well and may avoid you because of that. However, he also may surprise you and admit it was wrong of him to expect you to do that hike in that you were not dressed properly.

We can all make dumb mistakes, it's not the end of the world, lesson learned.