Any boy who has a hormonal response to a certain sexual act is a jerk?
I hate to tell you this, but people have very little control over what turns them on and what makes them feel good. A boy isn't a jerk for wanting to give a girl a facial, just as a girl isn't a jerk for enjoying wearing leather and whipping her boyfriend (or vice versa).
What determines if you are a jerk is not what you want, but how you behave in the pursuit of it.
I'd hate to break this to you also, but being "turned on" is just another emotional state that is subject to the mind's interpretation and perception.
It's long been known (as the root of Cognitive Behavioral Therapy) that the order of neurological operations is
Event --leads-to--> Perception of Event --which-leads-to--> Emotion
Some of these neurological responses may have become so ingrained and automatic that they seem "uncontrollable", but they are the results of many smaller controllable choices as to how to perceive a specific event.
It's the same reason why I find something enjoyable that you do not, and you find something attractive while I do not... we've made different choices along the way. It is a clear sign of emotional immaturity to believe that you are not in control of how you perceive events (which in turn creates the emotions you experience)
You are certainly not in control of the events that happen, nor the emotional release, but you can control how you perceive and choose to interpret things.
I hate to tell you this, but people have very little control over what turns them on and what makes them feel good. A boy isn't a jerk for wanting to give a girl a facial, just as a girl isn't a jerk for enjoying wearing leather and whipping her boyfriend (or vice versa).
What determines if you are a jerk is not what you want, but how you behave in the pursuit of it.