You need to let go to feel better about the choices you're making now. The best thing is to let go, walk away and never look back... At the end of the day the memory of a love once known will always be the most beautiful memory that you will have. I will always remember the good and forget the bad.
"Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it. Make it your friend and ally, not your enemy. This will miraculously transform your whole life." ~Eckhart Tolle~ Power of Now