This seems like an appropriate time to bump this topic, given that the Extended Cut is out now and people are actually finding their enthusiasm for it reignited.
So I played through the EC the other day - as my canon Shepard first, then as my Ultra Renegade Shepard, who is a dick.
I think it safe for me to say that I like Liara best as romances go, the way the relationship with her plays out over the trilogy feels relatively genuine - now I haven't done most playthroughs yet, so I can't say for certain, but so far I like the thing with Liara most.
I still flinch whenever anyone in this game says "I love you," though. It's one aspect of the romances that I thought could be handled better.
But, as it relates to the Extended Cut:
When Harbinger blasts that tank onto your squadmates and you have to get them evac'd - in some ways it's not a great scene, really breaks up the flow of that battle, but you know what? That's okay. I like how it goes after that.
"Get out of here!"
"You can't make me leave you!"
"Liara, one of us has to survive. Do you understand me? You have to get out of this alive!"
"Shepard!" And there's the pause, the silence, where she's still reaching for Shepard, and then her voice is soft, barely heard over the din of Harbinger slaughtering your troops: "I... I'm yours."
And then she's gone.
It felt emotionally genuine to me, and served as an excellent endcap for the relationship that you'd been building up for years.
Also, point of order, this game's soundtrack is still fantastic:
