Both of you are in this relationship for different reasons you might have developed this relation for emotional needs where as he might have been just attracted and not in love with you. Also on the onset of your relation you should have considered that he is unmarried and at some time in future he was to withdraw from this relation. The lack of emotional support (ignorance) may be very difficult for you to handle for you. Your complaints indicate depressive symptoms hence you must consult a psychiatrist nearby.