Oh god, those eyes. Every single time I go back to Mass Effect 1 and 2 with the intention of going after someone else, I get a glimpse of her eyes again. I'm an unrepentant sucker for beautiful eyes (funnily enough, Jack gets my vote for second hottest character for this reason alone).
I still haven't managed to actually stick with Tali yet, despite telling myself I'll get through a playthrough with her at some point. Something about the way Liara looks at Shepard in her more tender moments makes the whole "trying someone else" thing pretty well futile. As soon as I hit that part of the Mars mission where Shep brushes her face with his hand, and she gives him that look.....hoo boy, I remember why I stuck with her. One of the simplest, yet most meaningful moments of the game, at least for me. Almost makes me feel out of place as a guy, admitting that I prefer emotional moments like that to 'hawt blueberry sex'. Don't get me wrong, that part was amazing, it just didn't drive home the relationship to me as much as the little things did. Anyone can bone, but not everyone can show that they really
care.
On that note, did anyone else find that the Thessia scene was actually the most infuriating part of the game's story? The inability of Shepard to save Liara's people from Cerberus and the Reapers pissed me off like the Starchild never could. It's one thing to see the end coming and meet it with a sense of resolution, it's quite another to see the person you love engulfed in despair in spite of how hard you tried to prevent it. I could feel Shepard's pain and rage as the loss sunk in. Kai Leng's death was the fastest I ever pressed the Renegade interrupt button

. Too bad Shepard only yells "That was for Thane!"; in my head, he threw in "And this is for f***ing with my girl's planet, you ninja ******!" Thane's a great guy, but he ain't no blueberry.

I'm starting to ramble, so I'll go away. Sorry bout the wall of text, it's just how I write/think.