A bad experience should not bring a negative. On the contrary, a lesson.
Pity the day we don't learn something new.
It was his loss. That's what losers do. Lose.

You will find someone new very soon that will open a little hole in your wall with good gestures and good intentions.
Let him in. After some examination.
Beauty is in the eye of the beholder. And lasts very little, just a few years.
Enjoy your youth to the fullest. It also lasts little. Don't dwell in the past. He is in the past.
Forward.