Fidelity

Is it possible to be faithful to one person even when you are attracted to both sexes? What is fidelity anyway but a promise. If I can make a promise, I can keep one. The real question is can I? I believe that I can be faithful to one lover at a time. Just because I'm attracted to men and women, doesn't mean I want to be involved with both at the same time. That could change, I suppose under the right circumstances, but for now I can say one at a time, please!