Relationshp Do Over's

Do you ever wished that you had a DO over in a relationship. Would be for the nice guy that got away or the jerk that you liked so much that you stay with? If you had a DO Over in a relationship what would you do with the DO over  how would you use it and why would use this DO over to correct your mistake or change something about that relationship that you did not  when you was in a  relationship. Please share your thoughts  and make sure you post your comments on the blog.