I know you feel like you have failed, but you haven’t. Not at all.
We see it in a totally different way when looking from within.
It was not wrong for you to trust that person.
It was wrong for them to betray you.
You are not a fool, or a bad business person, and YOU DO NOT NEED TO QUIT!
Just cry, and scream, and cry some more.
We will help you. I will help you! Just learn from your mistakes!