Read other letters about this article
...does "nice dresser" equal "gay." My husband is from India, and there many men put just as much work into looking nice as women do. Bright colors, neat patterns and materials, cool jeans, etc. It's so dumb that here men have to dress like lumberjacks to get "straight cred." It's nice to have a husband who cares about his appearance. This "that outfit is too nice, so he must be gay" thing is one of the irritating things about American culture.
On the other hand, this LW is, I suspect, narcissistic as other letter writers have suggested. He obviously cares more about getting his ego stroked than he does about his wife or her feelings. Accepting a drink from anyone who is trying to hit on you is not ok when you are married. That's his real problem. Good luck to his poor wife.