Love is any of a number of emotions and experiences related to a sense of strong affection and attachment. The word love can refer to a variety of different feelings, states, and attitudes, ranging from generic pleasure  to intense interpersonal attraction . This diversity of uses and meanings, combined with the complexity of the feelings involved, makes love unusually difficult to consistently define, even compared to other emotional states.

Emptiness as a human condition is a sense of generalised boredom, social alienation and apathy. Feelings of emptiness often accompany dysthymia, depression, loneliness, despair, or other mental/emotional disorders such as borderline personality disorder. A sense of emptiness is also part of a natural process of grief, as resulting of separation, death of a loved one, or other significant changes. 

Loneliness is a feeling where people experience a powerful surge of emptiness and solitude. Loneliness is more than the feeling of wanting company or wanting to do something with another person. Someone who is lonely may find it hard to form human contact.