Divorce in my 60s

I was happily married for 41 of our 43 years married. I trusted my husband — whom I had met in high school — and loved my life. After my husband developed some serious health problems, he became depressed and started spending more time with his computer and less time with me. At work, he started spending time with a longtime female work friend who was going through an unexpected divorce after a long marriage. At some point, my husband realized that spending time with his work friend might increase his happiness. I knew he was spending time with her — but I trusted him and thought that time was platonic. A text I…