I'd say stabilize your character and confidence and prevent it from happening in the future.
Read "The alpha male confidence graph" article (it' about half a page long) on page 38 of the crash course.
I'm going to sleep lol so I'm not really in a mood to explain anymore.
Download the book at link
and then go to page 38 I think of it and read it.
I'm not a fan of giving people short term advice, I prefer making people learn from there mistakes and making them recognize certain patterns so that they don't fall in the same trap again.
Their are plenty of fish out in the ocean.
But as for this guy, I'd say stay away from contacting him for a few days and see if he's interested enough to come back at you.
If he comes back, you're lucky. Take it easy with him the next time.
If not, well then learn from your mistakes and don't do them again.