Will I "miss out" if I know I am biual but never do anything about it?

I had a hard time wording that question! But basically I have known I am since early in high school (I am 24 now). I only admitted it to myself and my best friends (2 of em) recently. The thing is that I am in a happy, monogamous relationship with a guy I really love. I see marriage in the future. I am just wondering if anyone has been in a situation like this and is not sure what to do? Should I bother coming out to others (family, friends, him! etc)? Should I try a biual relationship to see if it fulfills me as much as a 'straight' relationship? I just sorta wonder if I am selling myself short by never exploring my uality. But at the same time, I wonder if I really need to or if it is enough to accept what I know about myself and move on. Any comments?