First of all, it's not your fault that his mother didn't pay the rent. Also, sometimes, we have to just chalk things up to a learning lesson. Since I don't know both sides or more details, I can't say for sure that you handled everything perfectly, but I doubt you did, being that your human and all that. Relationships are learning experiences, some work out, some don't. Take what you have learned and apply it to your next relationship. Good luck and I hope this helped. Dm