The Lovers: The Player and Alistair, Morrigan, Leliana, Zevran, Isabela, Merrill, Anders, Fenris, or Sebastian
"I haven't felt this close to anyone in a long time. I really enjoy your company."
Neither of the Dragon Age games have particularly eloquent romantic dialog, but given the sheer number of partner options and the fact that you've got to court your sweetheart to make any headway, it's a surprisingly realistic simulation.
What sets Dragon Age: Origins in particular above other BioWare romances is that the game's morality system isn't a sliding scale of good/evil but rather a whole bunch of trust/opinion counters for each character. This means that your actions and choices - like in real life - have a direct effect on the potentiality of connecting with every given character. Some doors open, some doors close.