Good books that every gay guy should read

I Liked Hollis Shiloh's Shifters and Partners series. The backdrop is modern America (slightly idealized) but with the key difference being that there exists people who can turn into wolves or foxes, etc. These are generally low heat books, but I find it interesting how each book pretty much explores completely different personality types and situations and how they figure things out. Sorta like a gay Chicken Soup for the Soul-esque but full stories. It does rely heavily on a "Mates" concept where they instinctively know on first sight that this person is important and is their soulmate.