Octorox wrote...
My Tali can't be straight while yours is bi, as sexual orientation is a biological condition, just as much as gender or eye color.
And that appears to be where our lines of thinking differ. I don't view every option as existing simultaneously. I view each playthrough as it's own unique version of Shepard's story. If I make a choice in playthrough 1, it is the only course of action that exists. If I start a second playthrough, my previous choices are all irrelivant because this is a new story with a new Shepard.
Let me use an existing "bi option" just for the sake of clarity.
If you play John Shepard and romance Liara, then for all intents and purposes relivant to your game, Liara is a heterosexual romance option.
If I play as Jane Shepard and flirt with Liara, then yadda yadda, Liara is a lesbian romance option.
Bisexuality never actually comes into play because I don't experience Liara romancing a male and you don't experience Liara romancing a female.
In fact, the simple matter of Liara romancing Shepard actually upholds the notion that it is predefined because any player-variation of Shepard is irrelivant.
Further more, the logic used in your argument could also be used against
all DLC since all DLC adds something to the game that wasn't there before. Already I have a new set of armor and a new weapon that I didn't have in my first playthrough. Similarly by time it comes out I will likely have a Hammerhead and Kasumi in my third playthrough when neither existed in my previous games.