DEAR ABBY: I have been with my wife, “Sandy,” for 40 years. We married as soon as it became possible for us as a gay couple. While our relationship isn’t perfect, we are deeply committed and I always assumed we shared the same values. Recently, one partner of a couple we know well was admitted to a care facility for advanced dementia. The other partner became involved with someone else almost immediately. I expressed to Sandy that I believe in “until death do you part,” and I was shocked to learn that Sandy not only supported the unfaithful partner, but said she believed one should get on with…
