True but also i'm just going by where she's from.. Viv seems like the type who would be Bi , being Orlesian sure seems like most people that hail from there enjoy lots and lots of... lets just say Things shall we? (including both sexes)

So you think Vivienne will be bisexual because she's from Orlais? Um, I don't think you've read World of Thedas yet, but Orlais is just where they are the most open about sexuality. Not a single country in Thedas has a problem with non-heterosexuality, unless an heir is needed. Only Tevinter does, mainly because they are really fixated on producing more mages. Even then, they don't care that much as long as it's among someone's slaves and the magisters still produce children.
So yeah, that doesn't work either.