I think perhaps you worry too much about the opinions of others and how others PERCEIVE you.
You've got to take a STAND, friend. But, if you yourself are not sure of where you stand with sobriety, you will not take a stand with others.
Who cares what they think? ! ? What matters is what you think, and how you feel in your OWN skin. You've got to do what is best for YOU. I think the people who really love you will not shun you for not drinking nor for being bisexual.
It'll be alright. Relax and ENJOY sobriety!
Take Care....