If you think your husband might be the type to seek to add more names to his horizontal mambo dance card, there are various theories about how to best handle the situation. Some would suggest a direct, rational conversation addressing your fears and giving your husband the chance to address your concerns by looking you straight in the eye and lying about how you are the only person he finds attractive. Or you can sew a swan’s feather into a pillow to prevent him from straying.
Let us know how the latter works out, but please opt for pre-plucked plumage, lest you end up like the man here.