Not because of anything else , but you would smile because of me . You would smile for me . I miss you , but yet I know I ca n't . Because you no longer belong to me .

Choose from:
(a). The other person is seeing someone else ..
(b). None of the above choices ..
(c). The other person has passed away ..
(d). The other person no longer smiles ..
Answer the following question: Why does the other person no longer belong to the narrator ?
(a).