4 reasons of why open relationship exists

Some years ago, Facebook had a choice of relationship status: Open Relationship, which means both men and women were free to go on a date.
The film " Friends with Benets " describes a pair of Friends who are office workers, a man and a woman in a relationship is lover down to "emotional disorder", since they both felt love affairs and romance, it's very troublesome, rather than have an "open relationship", and they decided to" just for sex ".
Open relationships refers to the willingness of both partners to accept a "non-singular relationship" that allows them to tolerate or accept a relationship with someone else and to have a close relationship with someone else. In the fast-changing world of life, and the arrival of the Internet generation, people interact with people because of the possibility of exponential type, and the new generation of love interest has an interesting transformation. But what is the relationship between love and sex before we explore open relationships? Or perhaps someone called it polyamory? Whatever you are lesbian, gay, bisexual or trans? And just one of the member of LGBTQ+?
Maugham, Somerset of the short story "Mrs. 12", male leading role is a plain old crook, specially in the resort hotel to find the rules are simple, serious old miss, mechanical manufacturing coincidence encounter, take them out on a bisexual date, then false marriage true monetary gain, finally disappeared. At last the swindler was arrested, and in the judge's eyes the old crook was a master of all evils, but all the victims were unkind to him and did not want to accuse him. Old crook to judge said: "you don't know! I gave them, is they also discover late in life to enjoy : the taste of love."
Men and women in the feelings of life in search, for loyalty and have to rely on it, but if a man or a woman, in the love of a communication object at the same time, someone may be in throuple dating, also want to the pursuit of sensory stimulation, but it has nothing to do with love, how would you rate this person? What are you looking for in a relationship or a threesome dating? What is the relationship between love and sex?
The question is, why are some people willing to accept the open relationships? The following 4 reasons can be summarized from the past studies.

1. One or both desire to have more different experiences, whether it's sex, freedom, companionship, or spiritual communication, and they want to have more diverse choices.
2. There is always a lot of excitement and fresh feeling in the beginning of a relationship. For some people, in pursuit of emotional and sexual sense of high feedback (receptivity), will continue to open new relationships, sometimes is a seamless integration, sometimes two rail overlap, the latter is formed an open relationship.
3. Some people have more demand for sex than to invest in long-term and stable relationships. Short and plural sexual relationships are exciting and interesting to them.
4. In the end of some marriages, only the daily necessities sauce vinegar tea, but so long as the husband and wife, even if without passion or also have feelings, compared to divorce will face many complicated formalities, child support issues, and the other people's peculiar eye, to remain in the current relationship, and give each other some physical freedom becomes one of the options in bisexual playground.