Major setback - any advice?

[JMC]

Yesterday I met my W for lunch. Purpose was to get a key to her apt so I can watch the cats this weekend while she and her sister go to a family reunion out of town. We had a great time walking around the tree-lined streets after lunch and then hugged and kissed for several minutes. We sold our house last week and now I am living with a friend. I gave her a copy of my credit report and a budget I had drawn up for the month until both of our paychecks can go into our individual accounts (did not want to do this earlier as the mortgage was automatically drawn from the main account). Anyway, W called later in the afternoon upset about how I was dividing the money (I make about 40% more than her). I held my cool for several minutes and suggest we get together to go over, but after several minutes I got angry and told her she had some nerve asking for $ after neglecting our wedding vows, commiting adultry and moving out. I told her to call her other men for money.

I felt terrible almost right after the words came out of my mouth. I called later to apologize, but feel the damage may be too much to overcome. Since she first mentioned D in late Nov, and during the 4+ months she has moved out I have not lost my temper until yesterday. Any advice on damage control?