Our expert says:
Firstly, don't make any hasty decisions, which you might later regret. Secondly, don't feel "ashamed" or otherwise inhibited from discussing this with your family and friends --- YOU have done absolutely nothing wrong, and you are in no way responsible for your husband's seedy behaviour. You need and deserve their support and advice, and surely they would understand the awful position you find yourself in. Also, see a good local counsellor to understand your reactions and explore your options, before deciding what to do.
If your husband genuijnely wants this woman oput of his life, h could (a) tell her husband what she is doing, and (b) get a restraining order from a court, forbidding her from contacting or bothering either of you in any way. If he hasn't done so already, why not ?
COnsider his ofer to go with you to a marriage counsellor --- not necessarily so as to glue you back together again, but to understand all this better and make wiser decisions about the future, for the sake of yourself and your children --- and so as to be better able to avoid such events in future.
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