1. Expressing love: Kissing is a direct and intimate behavior, which may be your husband's way of expressing love and affection. He may kiss you secretly at night when you are asleep to show his deep affection for you.
2. Confirm your existence: This behavior may also show his deep concern for you. During sleep, people's subconscious will show their dependence and love for close people. Your husband secretly kissed you at night, probably because he unconsciously recognized your existence and expressed his love and cherish for you.
3. Habits and fun: Some people will have some special ceremonial feelings before and after going to bed, such as kissing, hugging or saying good night to each other. This may be your husband's personal habit. For him, kissing you may be as natural as brushing your teeth before going to bed.
Generally speaking, this behavior may represent his love, care and intimacy for you. If you are uncomfortable with this behavior, you can try to communicate with him and understand his real intentions. If you are happy and enjoy this, enjoy this sweet intimacy. The interaction and habits between husband and wife are varied, and the key lies in mutual communication and understanding.