An intimate relationship is an interpersonal relationship that involves physical or emotional intimacy. Physical intimacy is characterized by romantic or passionate attachment or sexual activity. While the term intimate relationship commonly implies the inclusion of a sexual relationship, the term is also used as a euphemism for a relationship that is strictly sexual. Intimate relationships play a central role in the overall human experience. Humans have a general desire to belong and to love, which is usually satisfied within an intimate relationship. These relationships involve feelings of liking or loving one or more people, romance, physical or sexual attraction, sexual relationships, or emotional and personal support between the members. Intimate relationships allow a social network for people to form strong emotional attachments.