If I lost him because I didn't call to confirm a date HE suggested... then so be it.
That's all well and good, but you came on here asking about it. No one is judging you for not contacting him, we are simply letting you know some possibilities.

Guys have thoughts and emotions as well, you know. Maybe he made an assumption that you would confirm details. If it is okay for you to do it, it is okay for him to do it too.

Good luck with the next guy.