I normally lurk here on the newbie board but I thought I might interject.

Your question clearly this is one that might enter the mind .
Guilt or no guilt the hurting of a loved or cared for one is not something most people are going to find enjoyable.

Each women's reaction will vary though.Some will immediately call their divorce attorney , some will want an affair of their own, some will try to  blame themselves and try and fix it through themselves, still others may demand you stop and go to therapy alone or together.

Regardless of the reaction the action to some extent is the same you are caught with your pants down and it is not a fabulous feeling your going to like to repeat .

I personally have experience with this actually.My ex husband was a hobbiest , we were eventually divorced . I tried to fix it . I found it was not for me to fix in our case and relationship.

I eventually became a provider first out of curiosity of what took my husband away from me and then when I realised i wouldn't ever know that  I began to have my own hobby experiences that made me want to stay .

There is always the possibility she might just enter the hobby as well boys .
As it turns out I am more popular than he was  Shocking lol Kendall