Xsause wrote...
Wanna know what's cruel?
Romancing Liara as a MaleShep in ME1, then going on to romance Jack in ME2 and only going to meet Liara right after you've locked Jack's romance in. You spend the entirety of Jack's romance convincing her that she's the only one for you, and that you love her, yadayadayada...
...and then you take her to see Liara, who greets you with a big wet French kiss.
I'm suprised Jack doesn't punch her lights out after that happens. 
Poor Jack. D: I'm surprised she didn't biotic punch both Liara and Shepard.
...This will be kind of funny on my Evil Shepard playthrough though. He's trying to use Liara and Miranda (and later Morinth) without the others knowing, and then Liara will kiss him right in front of Miranda. xD In the back of his mind, he would be cursing a lot. And then, when he's alone with Miranda... "She always had a thing for me, but I never returned her feelings. It's sad, but at least I got a resurrection out of it." Well, he wouldn't use those exact words.