Well, you obviously must have picked an option that starts the romance before. Once that happens, you have to break up with him - which you did, it seems. Some romance answers are not so obvious, in my opinion. I don't know about Alistair - I always go for him with female PCs - but I've already got "ninjamanced" by both Morrigan and Leliana. I swear I had tried to avoid that. I suspect that with Morrigan, accepting a compliment started the whole thing. I have no idea where Leliana got the idea though. You simply have to be *very* careful. And if you don't like the idea of being romanced by the character, just check how they feel about you after every conversation and load an earlier save if things get "bad". Cheating? Maybe, but I'd say it's better than making your companions upset when you didn't intend to romance them in the first place and wanted to only be nice.
Watch the relationship metre (or whatever's the name of that thing) and if it says "interested", "care", "adore" or "love" (the last two are self-explanatory, I think) - you're in a romance. If you're in a friendship, it says "warm" or "friendly" once you get past the "neutral" phase.
As Hayllee says, give him a gift or just continue the story, being a friend to him. You'll get plenty of chances to improve your relationship with him through dialogues, decisions in the game, gifts etc. Some gifts that bear special significance to him will bring a lot of points. You'll know once you get them as he mentions them throughout the game.
Try not to pick any choices that suggest you care for him more than just as a friend. No "...because you're special to me" stuff, no compliments. "I care" answers are all nice and cute but you'll get where you were immediately. You still can be compassionate and a good friend without those. So no, you don't have to be mean to him. Also, the funny lines usually aren't the ones that start the romance, I think. I saw a lot of them while playing a male character - you get no flirt lines with Alistair as a guy.
As to why he tried again, I guess you had picked a romance dialogue option again after refusing him. You have more chances to get intimate with him throughout the game.
Modifié par Vanilka of the Sword Coast, 04 juillet 2012 - 05:14 .