Twitchmonkey wrote...
That's placing your own value system on someone else, I think quite erroneously. I for one would be fine having sex with an asari or a Twi'lek, but I have no interest in sex with a man, so I think the idea that species is more of a barrier is incorrect.
Sorry but you're putting your own value system on everyone else even more erroneously. By your description above, you'd be okay with having sex with aliens with 'girly parts.' Thats a preference, and nothing wrong with that. But you're assuming everyone feels the same way. Yet in the context of what happens in ME2 thats not the case.
Lets look at the Garrus relationship. Turians share nearly nothing physical in common with Humans. To the point I doubt any human female would find Garrus attractive in a physical way. Garrus clearly feels similar about Humans. They do nothing for him physically. There's no indication of either half of the relationship having 'the right parts.'
What makes Garrus interested in the relationship isn't physical, it's mental. He cares a great deal about Shepard and is willing to overcome all the physical oddities between species to give it a shot. In the context of that, the male/female aspect is almost trivial.
The Tali/Shepard relationship is equally mental over physical. She cares about the female shepard nearly as much as the male, and honestly I don't see it a huge stretch to cross that boundary with her. In the context of risking serious illness to be with a vastly different alien race, the male/female line doesn't seem that serious.
Not that I'm really advocating either to be bisexual, just saying It's not really that big an issue in the context of the larger issues involved in both those relationships.
Also, remember Mass Effect is a deeply personalized experience. Which is why opinions vary on certain characters to the point of nearly sounding like people are playing different games. If certain characters were more open in their relationships in one person's playthrough, it wouldn't in any way affect how someone else played the game.