It takes lifestyle changes to restore that. Maybe you two have grown apart in interests and it would be good if you could find some interests together. We are not absolutely sure what the purpose is. Most likely it is to protect the head of the penis. It became a religious and cultural custom as a right of passage in manhood to slice and dice the penis.
Circumcision is the least invasive of that.
Sometimes because of infections, there had to be an incision to let the penis emerge. In some cultures, circumcision is much more invasive, for example, slitting the urethra all the way to the head of the penis. There is usually no medical reason for circumcision. Circumcision has no impact on sexual pleasure. Cross-dressing is an interesting and curious, yet accepted, phenomenon.