You shouldn't worry what others think and if I were you, I wouldn't bother telling anyone besides your BF, because it's really none of their business. For some ...sexuality is clear cut and they know from a young age who they're attracted to. For others it can be a little confusing and thats perfectly fine too. SOme also believe that sexuality is 'fluid', meaning it's subject to change thorugh out ones life. Who you love is your business and not your average Joe or Janes business. You're fine and don't worry.