In some relationships, partners are just incompatible.However they don’t always realize this straightaway. The reponsibility of this kind of mistake should be shared by partners. Unfortunately there might be no chance for this relationship except to end. The one that realizes this mismatch first, should express himself or herself politely and respectfully. Once you have figured out that you are not suitable for each other, there is no point in trying to hurt one another more. Even you can try to breaking up with staying still friends.