If you want to start a BG2 romance, it's the same, I think, only set the second variable to 1. But there will be trouble and complications (though you've probably been spoiled).
Thank you for the quick answer! I thought there might be something you could do to make him remember, I was running around doing healing spells, sleeping, and talking to him far too much. I decided to reload. I was wondering also if once he'd forgotten if it was possible to start a new romance with him? Or would that be weird because you're technically already bonded to him.....
I was in Warden's Keep and messed up the buttons on Mad Lum's machine and Xan got turned to stone. I turned him right back but now he's forgotten the relationship! We were bonded! My question is... is he stuck like this or will he remember if I just keep playing?