I have been involved in the game for more than a year and today i lived my worst nightmare! I got stood up!
So i've been meeting girls through direct approach during the day and also kept some online account.

I talked to this girl online and exchanged a few messages, she called me the same day and talked for a bit and at the end of it, just asked me to hang out! So we decided to hang out a couple of days later. I told her that it's pretty much set unless there is an emergency!

I usually check with the girl couple of hours before the date but this time i didn't, probably should have, and result was i got stood up! I feel really low and horrible! I don't get it, it was her idea to hang out on that day and stuff!

Have this ever happened to you? how did you deal with this?

IMO this is pretty much on you, dude...

Always follow up. You make a date then don't talk to her at all? No calls or texts or anything? She was probably wondering if it was even still happening.