Stop comparing your relationship to those of a friend. This bond is unique. By making allowances for your partner's needs, you'll forge a strong bond that will never be broken. This arrangement seems strange to outsiders, but don't let that bother you. Trying to fit a square peg into a round hole is an exercise in futility. It's better to accept the reality of a situation and make it work for you. This is one time when your flexibility is a decided asset.