Well, it could be that the bi man has a very interesting relationship dynamic. For instance, his partner might be very understanding of his bisexuality, which is a great thing. They might support each other's growth and development in different aspects of life. Maybe they participate in LGBT+ community events together, which strengthens their bond.
The bi man's couple story might involve a relationship that started in an unexpected way. Perhaps they met at a mutual friend's party. At first, there might have been some hesitation due to his bisexuality, but as they got to know each other better, they realized they had a deep connection. And now they are building a life together, sharing their joys and sorrows.
The story could be centered around the couple's ability to communicate openly. Given the bi man's sexual orientation, there might be some complex emotions and situations to navigate. But if they communicate well, they can handle any issues that come up. They might talk about their boundaries, their insecurities, and their hopes for the future, which all contribute to a healthy and loving relationship.