My wife has fallen in Love with another man that lives 10+ hours away... Is there hope for us?

Here are the details - Married for 3 years - slowly became a distant couple with opening of a business ~ 1.5 years ago - wife felt progressively lonely - I was working 14 hours daily to support us while our business got off the ground - Now business is booming - she went away for a trip - upon return something was definitely different - weirdness lasted 2 weeks - when confronted she said that she needed space - was not happy in our relationship/marriage - says she deserves happiness and wants space to get perspective to see if this marriage is in fact going to make her happy - I respected that and moved to the basement - worst 2 weeks of my life - I went away on a preplanned business trip which I then extended to give her more time alone - upon my return she continued to be distant - I was so sad and concerned - I noticed on her computer one day and email from a guy which stated strong feelings of "I miss you and I am thinking of you" " My feelings are so intense and I like it" - also was a photo that my wife took that was so pretty and she had sent it to him - I was devastated - I confronted her - she stated that do not talk anymore and that I should trust her - I decided to do so - then for a nother week things were so weird - she was always on her phone and I noticed her taking photos of herself and was obviously getting pissed - she said I was paranoid and said she did not talk to him anymore - I checked her email and there were 300+ emails between them and the feelings seemed to have escalated - there was no indication of physical sex but this was full blown emotional affair - She was so mad that I read her emails again - but I did not care at this point - I simply said that was too much for me and I need a divorce. She was obviously upset and stated that he was a guy with similar issues with his wife and they understood each other on another level. I stated that she let it go too far and it was obvious that she could not help herself - she is in love with him - to this day (3 weeks later) she still talks to him and wants to further discuss our divorce - Our business is new but doing great - we have no children - we have been married 3 years together for 12 - I'm 32 and she is 31.... I love her so much and wish she would just forget this guy but it doesnt seem that will happen - she says I am just someone she cares about and am an importnat part of her life but not someone she will be happy with if she spends the rest of her life with me. I let our love slide but not putting enough effort when she clearly always was just looking for attention - She knows I am willing to try 1000x harder but then again should I bother when she LOVES someone else? I cheated on her 10 years ago 2x but never since and she says she can never get over those.... I live at a friends house in his basement for the past 2 weeks and she lives in the house - at the mention of me moving in and her moving out she quickly says that we will just sell it then .... I'm so lost I just need some sort of clarity in this situation - she is my best friend and I cannot imagine life without her - I am still madly in love with her - her number one fan - I am lost here?