To OP: the character I romance first time through a game is based purely on who I think is cutest
If there's a tie, then yes, one continuously saying "We shouldn't do this," "I'm no good" can be the deciding factor.
It will be nice playing a new game with some fresh faces. Since I'm a DAO mage player from way back, and my canon Warden is a fem mage, I went with Cullen as my first romance on my first play and it was all planned out. Mind, I wasn't a rabid Cullenite or anything, but I was curious after seeing him develop over two games.
With the next game, after seeing some of the initial: here is what the game is, where we will be, and so forth, I'm
seriously considering dropping out of the forums and everything altogether. I would like to have known what my reaction would be if I went into the whole Dorian thing totally blind. As I said, I wouldn't have been disappointed because I planned on the Cullen romance for that play, but having that foreknowledge about a character isn't something you can un-know. So I don't know, for example, if I would have been like some reviewers I read who were totally bummed out when their crush came out during his quest.