Are you open to an open relationship?
Unfamiliar with the term? Think of being in a primary relationship, but with the ability to have sex with others. Openly. With your sweetheart’s knowledge and permission.
One of my acquaintances has this kind of relationship. She and her husband have permission from the other to “see” others. They refer to their relationship as polyamorous. In fact, one of her husband’s girlfriends moved into their home for a while!