The term stalking is used with some differing definitions in psychiatry and psychology , as well as in some legal jurisdictions as a term for a criminal offense. According to a report by the U. National Center for Victims of Crime , "virtually any unwanted contact between two people that directly or indirectly communicates a threat or places the victim in fear can be considered stalking",  although in practice the legal standard is usually somewhat stricter. The difficulties associated with defining this term exactly or defining it at all are well documented. Having been used since at least the 16th century to refer to a prowler or a poacher Oxford English Dictionary , the term stalker was initially used by media in the 20th century to describe people who pester and harass others, initially with specific reference to the harassment of celebrities by strangers who were described as being "obsessed". Although stalking is illegal in most areas of the world, some of the actions that contribute to stalking may be legal, such as gathering information, calling someone on the phone, texting, sending gifts, emailing, or instant messaging.
While definitions vary couple-to-couple, there are some common underlying factors, such as secrecy, deception and emotional volatility. However, according to experts speaking to Women's Health , there are five definitive types of cheating and surprisingly, two of them may not even involve your partner. However obvious it may seem, even physical infidelity is not necessarily immune from ambivalence. Grey areas arise when you get into the minutiae of intimacy, which your teenage self will recall as an all-inclusive scale ranging from kissing to intercourse. Essentially, this boils down to harbouring feelings for someone else which, Barnett explained, is something that really is beyond your partner's control.
The level of the relationship you have with another person defines the difference between casual dating and being in an actual, committed relationship. Dating someone allows you to spend time with a person freely but with no promise of a long-lasting and long-term partnership. The focus on the type and level of intimacy you have with another person also distinguishes dating from being in a relationship.