Never regret a relationship that has ended. If it was good, then that is wonderful. If it was bad, then you have experience.
"She's a keeper too bad you didn't keep her. Now she will be with a man that really knows how to treat her."
Everything in life is temporary. So if things are going good, enjoy it because it won't last forever. And if things are going bad, don't worry.. it can't last forever either.
I'd rather have bad times with you, than good times with someone else. I'd rather be beside you in a storm, than safe and warm by myself. I'd rather have hard times together, than to have it easy apart. I'd rather have the one who holds my heart.