I posted this on Reddit as well; I hope that's ok. I'm a newbie.
Here's my story: I've been with my husband for 30 years, since I was 17 years old. We've been married for 22 years and have a 21 year old son and a 15 year old daughter.
He works away from where we live and is on a two week rotation, meaning that he's home for two weeks and away for two weeks at a time. This will seem strange to a lot of you, I'm sure, but there is a high jobless rate where I live and this sort of thing is very common.
We were very close. We talked every night he was gone for around 45 minutes. Our sex life was great, and always was. He loved me as he'd always loved me, or so I thought, until the first time he came home after he started sleeping with her, which was around the beginning of July of this year, as far as I can tell. All of a sudden, everything was different. I convinced myself that he was just tired from his long shifts, that he was just getting older, etc. until I couldn't take it anymore.
In September, I accused him of having an affair. I had no reason to think he was, except that he was acting differently. He denied it. I insisted that something was wrong and he finally pulled out the "I've been unhappy for a long time and I love you but I'm not in love with you" card. I asked him what he wanted to do and we decided to work on it. Little did I know that he was fully immersed in a full fledged affair with a coworker.
Fast forward to November 9, when I received a text from her husband, telling me she was sleeping with mine. I confronted him. He denied it. I pushed because I didn't believe him and he admitted it. I asked if he loved her and he said yes. I asked if he wanted a divorce and he said yes.
The next day, 30 years to the day since we'd started dating, we sat our children down and he told them what he'd done. They were crushed and shocked. We had a happy marriage as far as anyone, including me, knew. The first thing my daughter said was, "All I ever wanted was a marriage like yours."
To say I'm devastated is not enough. There are no words for what I'm feeling. This is a man who was well known as a good husband and father. A respected man. A man who has loved me unconditionally since I was little more than a child. A man who has been my best friend for the vast majority of my life. And now he's with her. It's all so surreal.
I cannot even talk to him anymore. He will not listen to reason. He doesn't blame me, he just keeps saying he couldn't talk to me about his unhappiness and that she just came along and he let it happen. But I have so many things to say and although he's mostly willing to listen, he hardly ever gives me a response.
TL;DR:
I gave him 30 years of my life. I gave him everything. And now I'm alone and I have no idea how to cope with the fact that someone like her has taken my place. I have no idea how to cope with the fact that he loves someone else or that the husband I knew is dead. I am so, so lost.
I'd appreciate any advice or encouragement.