Secret Fantasy Trip

Hi there, I'm a military spouse and my husband doesn't share one of my kinks. The other day during a rare weekend alone, I indulged in something naughty, I booked an all-girls retreat center for the night and dressed up as a cheerleader. It was thrilling to pretend and explore this side of myself without him around! Now I'm wondering if it's normal to have fantasies that my partner isn't into? Should I tell him about it or keep it secret?