How can I get rid of the evil relationship with my wife and sister?

Whether from the perspective of social moral responsibility or maintaining family harmony, I will advise you to give up this relationship with your sister-in-law on your own initiative. In fact, you have realized to some extent your family responsibilities and the risk of letting this relationship continue. I just want to make a deeper analysis here. The key question now is how to make your "last time" with your sister-in-law not an empty talk that is always repeated. I want to focus on this issue:

Think more seriously about the consequences of this relationship. Now "extramarital affairs" has developed into a serious social problem. One is that some people just "suffer from this problem". However, some parties involved in "extramarital affairs" always feel that they are very hidden and safe, and there will be no problems before they will be exposed, and no tragedy will happen. But you are different. Obviously, you have realized the problem, but you may not realize the seriousness of the problem.

You think, if one day your relationship with your sister-in-law is exposed in broad daylight, it will undoubtedly be a mental blow to your wife who has a good relationship with you for a long time, and it is very likely to develop into divorce; Once it is known that my sister and her husband have such a relationship, it is entirely possible for the two sisters to turn against each other.

The biggest danger lies in your brother-in-law, who highly trusts you and his wife. When he finds out that his wife has this relationship with you for a long time, he may submit to humiliation and make up. But it's also possible to do something you didn't expect. Don't think that he is introverted, inarticulate, and will only bury himself in his work, and don't think that he is a man who is not rash, researched and cultivated. There are many cases in which "Kochi" will do sensational things under extreme impulse when his dignity is seriously hurt. Isn't it reported in the media that doctors and professors brutally killed their rival in love because their wives were having an affair?

I think you should make an appointment with your sister-in-law, and imagine the serious consequences of doing so, so as to "make repeated appeals" and stop maintaining an abnormal relationship. More importantly, in order to avoid being impulsive at the sight of her sister-in-law, we should consciously reduce our contact with her alone, especially consciously "excuse" to reduce the chances of going out alone with her.

Of course, giving up this relationship requires a high degree of self-control. I think giving up is not "sexual repression" or "sexual destruction", but a concrete manifestation of social and family responsibilities. As long as you have this strong sense of responsibility, the "last time" will not be endless.