Before you make any quick decisions about your position there, have a good think about your attitude to other employees. If you decide its your fault then moderate your attitude. If you consider it not to be your fault then you have two choices.
1) Find another job.
2) Stay put and be more...
Your story was funny and also moving.
Its plain to anyone that your straight. Anyone can be turned on by something or someone at anytime, but it most certainly doesn't mean your lesbian or bi.
Just try and keep your friendship with her. You have now made it clear to her that your happy with your...