When you cheat your wife, your BP goes up & up &..... God warns you to stop that action of yours, but you ignore that warning thinking you are smart & can manage that. And Heart Attack comes as punishment to you for ignoring that warning.
Remember, God doesn't allow anyone to punish anyone or cheat anyone under any circumstances. Even your wife is cheating you, you are not allowed to reciprocate..
Swami Arunanand