Unable to understand myself. Real self?

Having different emotions towards different people and according to the circumstances is quite normal. If the problem is in feeling emotionless or having been told by others so, then the question needs to be asked to oneself why the other person thinks so. Is it a misperception by the other or an inability of oneself to express emotions appropriately. Lack or inadequacy in expression of emotions may bring about serious problems in relationships thereby leading to personal distress. One needs to be aware of the other's perception and change one's own behaviour accordingly in order to communicate what one feels. For example, remaining mum may be one's way of expression of grief to the loss of a loved one while the others may expect the person to cry to be the appropriate emotional response. It may just be sufficient to verbalise your feelings so that others will understand that you're experiencing the pain of separation.

You should consult a Psychiatrist or a Psychologist to understand the intricacies of communication and relationships.