Once a man is cold to you, there is little room for redemption. Because a man is rational, he will be chilling only if you do something that really hurts him. In his heart, he has completely given up on you and there is no hope, so it is really difficult for you to save him. Unless he loves you very, very much, to the bone and forgets himself.
But even so, I don't forgive you completely, I just give you a chance. So you must change yourself and let him see hope, so that he can really accept you.