In order to move past this, you have to forgive yourself. You made a youthful decision t be dishonest and it hurt someone you love. We’ve all been there, but it doesn’t have to figure into the rest of your life. You learned a valuable lesson about how your actions can effect others, take that lesson and that knowledge and put it into practice in a new relationship. That way, the situation is not in vain, but can actually be used to better yourself and the world.