That isn't the correct way to deal with a cheating partner. If you know your partner is cheating, and if you still want to make it work than you should probably separate for a for a while, but inform your partner that you still want this relationship to grow. Also you should ask the cheating partner is they want to make something out of the relationship. That is my best advice. Or see a therapist.
The silent treatment is used often by a mate because they do not want to get into an argument as it only fuels the fire. However continuously being silent does not resolve the problem either and the person who remains silent has options of either leaving that person; getting psychiatric help to deal with the situation. 'The silent treatment' can be misused because some abusive mates will use this to intimidate their other half. As with many other things in life the 'silent treatment' from another person in a bad relationship is often misunderstood.
I had to deal with the same thing. If you don't know the person that he or she is cheating with, then don't get into it. If it's a close friend like i had to deal with, then tell your friend to break up with the cheater.
You are better off without them
You run away to safety.
How do you get rid of the obsession?
You can't, but may be you can make a deal with him.
Because he was cheating on her or they can't deal with each other anymore
Best friends need yelled at every once in a while believe me it will help in the long run.
You are saying narcissist ex. If he is your ex he is not cheating on you and why would you care if he is your ex. Forget about this and move on with your life. If you think that this is cheating on you - better think again and also know that this will go on and on.
talk to her about it and if she make a big deal out of it the hoe eaither cheating or she like and and break up with her
as an income
your partner could be stressed at the moment. if the kids are aggrivating it would be best if you deal with them