DEAR ABBY: I thought I had a best friend. We got to know each other when we worked together for almost four years. He’s straight, I’m gay and we’re total opposites. However, he taught me how to fish and took me shooting at his family’s ranch; we would go to dinners/lunches and go to the city. He’s a few years older than I am (he’s in his 30s). When I went to rehab for six weeks, he came to visit me. But when I celebrated my first year of sobriety a few months back, he never congratulated me. I found ...