Hmmm.... What are you worried about? I chose to save logan and I still got the third heart so don't worry it's just a way to get the heart quicker it's only optional. You didn't screw yourself out of anything lol, and back in Harold at the moment his scenes are only the potion and payment ones so I can tell you that for sure. (Almost forgot about the if you failed at scar/seduced him almost and got screwed by the bandit camp, He has a special reaction to that)