Honestly?
Of course I want her, and not for a one night stand, but to have a relationship with her. She's not the hottest girl I know (HB7 or

but she is by far the coolest, and proved she has my back more than once.
But she friendzoned me from the start and never showed any signs that she is atracted to me. Now this... The only reason I escalated on this was because 3 PUA wannabes said it was working and the more I did it the more unconfortable she was and the more the bastards incited me to keep at it, until the whole situation blew in my face like a poorly made pressure cooker.
So even if I want her I will not lose a good friend (wich she already proved to be) chasing some pipe dream and fighting a lost battle.
Do you understand my point of view?
Still, what should be my behaviour in any of the two situations?
Ok, so sounds like you have accepted you will not date her anytime soon. In that case, apologize.