The fourth person can exist in various capacities, or appear in the places you know best but least notice, distant and close to each other, filling their emotional deserts, and it has become one of the modern diseases of both sexes. Below are a few of the susceptible areas – to find them, you have to make hard to polish their eyes. 1. Missed marriage. Originally, if the two are interested in each other, can become lovers, and married, but the two did not think in this regard, or miss the timing of the marriage, to be into the siege only to realize that that’s exactly what they want to feelings, so the two become the best confidants of the opposite sex. This kind of situation mostly occurs in the classmates, neighbors, and most of the geographical factors caused by the failure to enter the marriage at that time. This type of person moves to the fourth person very naturally and will consider each other as their best confidant. However, such relationships are prone to develop further into silent love and go into marriage if both are not firmly rooted in marriage. There is a girl who herself and a boy were high school classmates and were very close friends. After graduation they went to different colleges, but the boy often used the poor food in the cafeteria of the school as a reason to find her to eat together. They also wrote letters to each other on topics such as school news, studies and some love affairs. When they entered society, they still continued to date, and many people recognized them as a couple, but the two did not think so. They made a pact to get married if they couldn’t find the one they wanted until they were 30 years old. One day, when the boy led a girl to meet her, she froze. She had known that there was no love between the two, but when a woman did come between them, she still blacked out because she lost herself. People who have felt this way are extremely prone to go into a fourth person state to make up for what they felt at the beginning; if the marriage of the two main people is not very stable, then it is also very easy to jeopardize the marriage. 2, both sides are excellent, can also be completely love, but not necessarily their favorite type of the opposite sex, between “buddies” and “family” feelings, like two parallel lines going hand in hand, are not listed as the other side of the object of marriage, but also willing to Talking to each other dating, so the natural development of the fourth category of emotions, maintained for a long time. 3, more is the third: the marriage is not enough to satisfy, but also quite calm and peaceful, looking for the passion of the party will naturally emerge in the premise of not giving up the family of the fourth category of emotions, as a way to alleviate the mental pressure and psychological depression, this kind of people often did not think of a divorce. Of course, this move is very difficult, who can guarantee to find the one who is not to you to force the marriage of the fourth person rather than to subvert your family’s third person? 4, the foundation of the marriage is good, but it is a little away from the type of family. Want to protect the marriage, but also want to get rid of the loneliness of the siege is most likely to appear “alternate lover”, “replacement husband” thing, but also easy to produce the fourth. 5, the worst is the appearance of separation, but in the way of the children or face and determined to die not to divorce the family. For them, taking on the role of the fourth person and looking for the fourth person is the safest and most satisfactory choice. 6, many people practise “find a person who likes himself as a wife (husband), find a person they like as a lover”. Therefore, after marriage, their spouses are very good to themselves, they are also very satisfied with it, do not want to give up, but the fish and the bear’s paw want to have both, so the breeding of the “fourth person”. In addition, the spouse’s close friends and online friends are also highly likely to act as the fourth person.