What is my husband thinking of during sex?

My husband always closes his eyes during sex. I feel this is because he needs to fantasise and I find it unsettling. Is it weird to feel jealous of his private thoughts?

It is incredibly common for people to close their eyes and fantasise when having sex. For women, fantasy is a way of speeding up arousal and hastening orgasm. Men who are anxious about sustaining an erection often use fantasy as a prop.

Others shut their eyes to avoid coming too quickly. And people who are self-conscious find it easier to relax with closed eyes or the lights off.