Sorry Tk to hear about your situation, while I am in no way learned enough to give you a truly helpful suggestion I felt I would at least chime in with the rest of the crowd and push for professional counselling and also legal assistance and fast.....
Also with regards to a few other posts, I saw some question Twinkle's mention of transferrence of guilt when the wife told her husband what was going on, sorry all but this is a case scenerio and has been thoroughly reasearched...the wife was not telling him because she was a great person, or just wanted to be honest, or had sincere moral convictions...if this were the case she would have come forward before the affair and discussed the situation with him, instead she was transferring her guilt, she was living with a lie and couldn't deal with it, told him which absolved her of keeping her secret and freed her from having to hold it in....do a few net searches and you will come up with tons of info.
I think TK that is you do truly *love* her then you will ultimately forgive her as love cannot be undone and if you do love her then you cannot be without her...however with that said even if you do love her and are ready to forgive you have to see what your situation is and what the chances are of a repeat scenerio and also how you will be able to handle it....from what you are saying it sounds as if while she does feel bad, she is still trying to justify her actions by blaming it on the flame leaving the relationship...I agree with another poster when they say that chances are high she will do the same again when the next guy comes around who shows interest, especially due to her low esteem issues...
I also agree with Skroob with re. the whole butterfly bs issue, I think media, movies and the like give people are truly distorted view of love and or working relationships...heck watch any chick movie and you will see the people are automatically in love and everything rocks all the time....IMHO this couldn't be further from the truth than anything for most....
Personally I would distance myself from her now, don't let her potential situation effect your decisions with regards to living accomodations....she decided to cheat so now she should pay a little not you, she is more than capable of getting a hotel room or something for the time being even if it is on your dime....either that or you go move out and get some space, air and time to think...honestly you are really really lucky that you don't have any kids as that would make things far more difficult....
Also try to work at the councelling and see how it goes, at least for the fact that it will look good on your behalf in divorce court if it ever comes down to that...good luck.
also a great site for this kind of question is:
www.consciousloving.com
Also if you do stay together I fully agree with getting the "free sex pass" x2 for you ....on a personal note were you two married before having sex? or were you both experienced before? if the former then I could somewhat more easily understand her actions, if the latter then I still understand but would have an easier time forgiving if it was a matter of experimentation.
they have some good forums with people who are really willing to help