The action of the show is simple enough. The four women were stashed on one side of the island for two weeks with 13 ready-to-go single males. The males of the four couples were on the other side of the island with 13 eager women. ("Keith," one of the singles, was thrown off the island for failing to make a connection with any of the women. Poor guy. No seductive skills.)
The single males come on to the four women, going on "adventure dates," often pushing things along by kissing and hugging. ("It's his job," one of the four men said philosophically of the single guy pursuing his lover.) Then videotape excerpts of the action are sent back to the four men, who have an opportunity to be indifferent, appalled or enraged. The four women get similar videotapes and have similar reactions. On one tape a woman is encouraged to lick some fruit juice off a man's chest. She does, and squeals, "Billy would kill me for this!" Billy sees the tape and announces, "Now I guess I can do whatever I want," and heads off toward a new woman.
Good luck with the relationship, Billy.
The four women and four men talk to their partners only via videotape. Almost nobody says, "I love you" or, "Don't worry. Nothing happened." Presumably this would ruin the show. Instead they say things like "I'm having a super time and I hope you are too." This keeps the all-important doubt and jealousy. At a ceremonial bonfire (the equivalent of those rituals at the fake Polynesian ruins on "Survivor"), the principals "confront their emotions" with large emissions of psychobabble. Women sob. Men sob. If they complain, the host says sharply, "You signed up willingly to be here."
The central assumption of the show seems to be that everybody should be ready to trade in a current partner if a more attractive one comes along. As one contestant says, "Temptation Island" is structured like the Pepsi challenge, with people playing the roles of Coke and Pepsi. One of the women puts this grass-is-always-greener philosophy as gently as she can: "I think the idea of remaining in a relationship with a man who no longer makes you happy prevents a person coming into your life that you are supposed to be with."
Married or unmarried, it's best to move along if you feel you will be better off. The very thing that moves you into a relationship -- the drive for self-fulfillment -- is very likely to move you right on out. So just go with the flow. Or just skip the show and switch to another channel.