Morkus from Orkus
You're missing my point, but that's partly on me for not being consistently explicit. There are no consequences to characterization. Your characterization is not at risk. Everything you mention here is external to the character -- and, I'm not, nor have I been, talking about that. So, I get you fine, it's you missing my points.
Nah. You just somehow don't understand what it is that I do. You see, if my knight whose concept is a knightly paragon of virtue gets put into that situation, he may or may not succumb to the maiden's wiles. His character is indeed at risk, as if he does succumb, his concept is dead or dying. Not only that, but if he succumbs, I then have to struggle with he reacts to his fall. Does he do the right thing and marry her? Probably. Does he fall into a great depression, perhaps drinking or not doing anything, including the quest? Maybe. Does he try to atone? Does he pretend it didn't happen and do double duty on knightly virtue stuff? And so on. Lots and lots of character development and risk to who and what he was.
I didn't mention that stuff, because it was so obvious that if it was a hole, you could drive an 18 wheeler through it, so I figured you'd understand.