Summary of the problem
This is a real post: "Now that [my wife] has met people on [the Internet] and started to flirt, I am starting to feel deeply hurt. An unbearable feeling of jealously is gripping my heart and distracting me from my own daily life. Work, friends and household are all affected. She laughs it off by saying nothing will come of it—it's only innocent conversation."
Internet infidelity is far more widespread than people realize, because the Net makes infidelity readily accessible. Computers keep things simple, convenient and private.
People get involved in online affairs for the same reasons people have always engaged in extramarital affairs: They are trying to meet needs that are not being met within their marriages. The big lie at the root of most, if not all, extramarital affairs is that things would be different if only the person had married someone else. But people must to know it's not true—people on their second or third marriage soon find out that the new spouse has the same problems as the old one.
My advice
As most couples know, creating and maintaining a solid relationship is hard work. The most reliable medicine for infidelity is prevention.
If you realize that your partner could being to start getting in touch with people by the Internet whom you don’t know nothing about, or proves chat-room discussions on *censured*, or so on, you should seduce him/her again immediately. You ought to remove routines between both. Pay attention to your partner and don’t allow that other obligations, like children or job, steal you time for him/her. Make your partner feels he/she is desirable. You know what is exciting for him/her. Try to introduce a little bit of fantasy in your bedroom. And never, never, punish him/her by the reason of your jealousy: This is the best incentive for him/her to look for another man/woman.
Perhaps your partner doesn’t stop his/her Internet habits. In this case, add you to him/her surf, and make profit of it for know what can find you and your partner together. There are a lot of possibilities for both…