Preoccupation a Sign of a Gay Spouse

Gay Spouse/Straight Spouse
What are some of the traits that one should look for if you think your spouse might be gay? I think that there is a pre-occupation with any secret in life. They are totally absorbed in their own little world and aren't really there a lot of times. They are focused inwardly on themselves and not outwardly on others. Just think if you are living a secret life, you would be a little pre-occupied.