I am a divorced gemini woman once married to a gemini man for 20+ years. Affection nor romance was part of the relationship. Although I knew this while we were dating, as a gemini myself, I think I partially understood and married him anyway, thinking it was part liberating for a woman to not be pawed by men. Well, I began to realize something was missing. After the sex drive was gone from the marriage, so was any show of affection. I began to believe that's how marriages become for people. After all, we had a family and busy lives. What I did not realize by denial even until after the divorce, is that he was very self centered, thrill seeking, and a cheater. Gemini's men are great at seeing different sides of things and using the most convenient perspective to justify their need for variety and avoidance of boredom. These needs are not superficial to them because they thrive on it. Also, they thrive on attention and the thrill of new relationships and new interests and toys. Gemini men without the maturity of empathy have no clue about working through problems. They just move on to the next amusement.
My bottom line is that if your Gemini man is already showing lost of interest, know that you will have to think of a game plan to get him more interested in you than something else, or live with minimal affection and risk losing him at midlife crisis time.
This was my experience, and seeing others come up with their experiences because of your question has really helped me to understand why he broke up our family.
I think Gemini women are different from Gemini men. Can someone explain how gender plays a role in the character of people of the same signs?