Interesting point of view.
I have always been looking for girls that really liked Cum. I've normally started by Cumming on their tits and went on from there. When a reluctant girlfriend had me covering her boobs a few times they often took it on the face. Maybe because they noticed my excitement! And sometimes I just saved my load for a week and "happened" to shoot it all over her instead of just her tits.
A few years ago I had a really reluctant girlfriend though. To tell you the truth, I was more eager than ever to cover her face! The first time I had just come home to her place after working away for a week. I had teased her about licking her pussy and fucking her with a buttplug, which she loved. When I got horny messages back I replied with the wish of a welcome-home-blowjob. I was happy when she dropped to her knees in the hallway for me. I couldn't help myself grabbing her hair and filling her mouth with a week worth of Cum!
I don't think I'm an asshole, and I don't believe your desire to give a girl a facial due to her reluctance is either.
O by the way! The same girl got so into facials that she liked filming me Cum on her face so she could count how many ropes she could make shoot!