I try not to cry

It really is too incredible to be true, but it is.
My husband, Don, was acting weird. He seemed more distant than ever. He went to see his mom at the beginning of September and called every night. Then I went to Alaska to see Garrett for 10 days, to celebrate my birthday, and to figure out what to do about my marriage. Don just seems so angry all the time and uninterested in anything that I had to say or do. Don called us every night and it seemed like things were getting back on track.
Then he went to California to visit his sister Janet....
Don ignores me when he is with Janet. She is his fantasy girl. If he thought as much of me as he does Janet, we would have a rock solid marriage. So Don doesn't call for 3 days - not even to let me know he got there. Janet is posting picture of her and Don hiking on Facebook. Her friend posts "Gorgeous scenary and gorgeous brother". Janet says "yeah, he's a keeper". I thought that was an odd thing to say. No one mentioned ever that he was married.
So he comes home on Sunday and says that he will take care of my car. Monday he takes care of the car and then takes off. I come home to a note "Need some time to myself. Going to see a show. Be back late". We he never came home. He texted me that "I can't take it anymore. I am a bad husband. I will call you in 3 or 4 days. Have a good life.".
He wouldn't answer my texts. He texted me one more time to say "I wish you well in your new life." What does that mean? He texted Garrett when he told him that he was worried about him.

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T he end of this story is that he never told me where he was or if he was coming home. He came home 3 weeks later. He was in Brazil. He was with a woman he met on Twitter. He continued writing tweets to her when he came home "the orgasm of the flower" was one. He never came back home. He stayed in a  hotel. I filed for divorce. I feel battered.