Definitely yes
If you have absolute proof that your husband is cheating with this other woman then you should deal with your own problems with your husband first and yes, the other woman's husband should know. This is not an uncommon problem and most people (whether a husband cheats with another man's wife or a wife cheats with one of her friend's husbands) is very common and the victim of the cheating generally does tell the husband or wife that their spouse is cheating with their spouse.
no
stop cheating on him? - well maybe you are doing something that you are unaware of but your husband senses other things , that leads up too you cheating on him.
You should leave him because if you take him back (provided he is not staying with that other woman) it will just give him the go ahead to do it again.
Yes, I mean why wouldn't he care if you were cheating? Why are you cheating? Maybe he was cheating also. Seems like an unstable relationship , do you still love each other? If you do then why would you cheat and why would your husband "approve" of it. That's not good at all, most people care if their husbands/wives cheat on them!!! You two should sit down and talk about this.
No....because flirting leads to cheating.
if you know for sure ask him why and tell him its better to be honest that you should tell each other everything and have an open relationship with honesty and trust and tell each other how you feel you find that with an open relationship you will not be cheating on each other because you will both tell each other everything and you both will be closer and happy
Because, to be fair, she is married to the husband. So technically, she's cheating on the husband with the lover; not the other way round.
this behavior would definitely be considered cheating on your husband.
He is cheating on you that is the only possible answer i can give you but what you should do is talk to him and figure something out if he loves you or the other girl
get rid of him is it is cheating but other than that i am not shur to be honest
Sometimes keeping secrets is a good thing as some as private. In other cases, it may lead to cheating.