I agree with GalaGirl, from the perspective of a man. There isn't anything deceptive about bringing the conversation up as "weird" or an unusual occurrence, and wanting to explore thoughts you each might have.
My advice though, rid yourself of any expectations you might have. Its ok to be prepared for different directions the discussion might take, but too much weight placed on an expected outcome can sometimes set us up for emotional slips, trips, and falls.
Just bring it up lightly and naturally as a discussion and see where things go. You might be surprised
Be honest and be kind. Good luck!