A relationship is a temporary state of mind. It needs to be constantly maintained. Hormone oxytocin plays a major role in relationships between spouses, boyfriends and girlfriends, parents and kids, pets and their owners. Relationship activities are activities that release oxytocin. Between spouses, these activities include, but are not limited to, eye contact, hand-holding, sharing an emotional experience, hugging, dancing, cuddling, and sex. Do them or your relationship will die.