A friend asked, "How can you be so friend with him though he once fell for you and not me?" This, probably happened to the others too. Such situation often alters depending on few factors. Who, why and how. Who the person you dealing with, why it didn't work out between you both and how he handles it after the decision is made. If the person doesn't get bothered much about it, and holds on to the concept 'we are still friends no matter what happened', then the friendship remains. With no complaints for not accepting him. Even if he holds the slightest grudge against you for it didn't work out the way he wanted it to, then sad to say, he's losing the friendship. There is no such excuse as "I tried to maintain our friendship but you seemed to be avoiding me." How can one be avoiding that particular person if he himself is fine with it and are still friends? How is it possible that you will notice it if you no longer care about how that person feels about you? Whether you both can be together? It is the matter that you can really let it go, or you are still looking for your chances.