Let's say I know someone quite well but have never met their other half. I know he is a regular cheater in their relationship of 6 years but as far as I know, she has no idea.
Should I inform her on what he is doing?
As someone who has been cheated on before, I would have really wished someone told me about it. It would have saved me from a lot of pain. I wonder if more people feel like this and if I should tell her or not.
Should you inform someone their partner is cheating on them?
No, never.
If you do tell the cheater's spouse, you might be responsible for shattering her universe, and she will never thank you.
In brief.
You do not know anything about her. You have never met her.
Do not meddle in other people's lives.
It is none of your business.
References
Should I expose someone who is cheating?
If you decide to expose your sister’s husband, are you ready to deal with the consequences? Typically, the only thing worse than a cheating spouse is someone who exposes a cheating spouse. Infidelity and affairs are very common (see stats about infidelity). And it is almost impossible to have an affair without someone knowing about it. But, most people keep quiet about it. When it comes to infidelity, most people believe that the best course of action is to “mind your own business.” And if you cross that line, rather than being seeing as a hero of the truth, you might be seen as a troublemaker (even by your own sister).
Should You Tell On A Cheater? I Wish Someone Had Told Me
There is an etiquette in these situations that I recommend. If you know the person being cheated on well enough, you should tell them in person, providing the details you know. Keep reminding them you are only telling them the truth because you honestly care and respect them; as sorry as you feel having to tell them, you would feel extremely sorry if their future was compromised by allowing the deception to continue.
However, the article continues...
In situations where you don't personally know the person, but have strong, first-hand knowledge, I encourage you to drop them a note, give them the details you do know. Tell them that you hope the information might explain suspicions they may already have and assure them that your only agenda is being honest. If they choose to ignore the information, at least you've done your due diligence.
Wow that sucks.
I would suggest getting in touch and asking her if she want's to hear what you have to say. Say something like, "I have some painful information about your husband that I thought you would like to know. Should I tell you or would you rather I mind my own business?" she will almost certainly say that she want's to know. We humans seem to always prefer to know more rather than less.
Giving her the option to hear it will actually prepare her to handle the bad news better than if it is just dumped on her.
Also, if you have some sort of proof it make it easier for her to accept.
