I kinda get where you're coming from with this, it's more an argument for homosexual attraction not being "a choice" or "a lifestyle" though, because if you had to choice to be a social outcast, why would you? It's not even good for oppression points any more unless you're a minority, in which case you'll have the same spot on the progressive ladder anyway.No disrespect, but I've never understood why bisexuals would want to date gay. If you can go either way and you're not into the oppression olympics, why would you choose the relationship that comes with less dating options and a social stigma?
As for how to pertains to bisexuals though, I think it's a depressingly shallow view of relationships. I don't specifically love my fiance because of his penis, there's all the other things that draw me to him that would still be true even if you took the sexual element of the relationship away.