I pay attention really well in my college psychology class because I have a crush on my instructor
What would happen if you thought he was not good looking.
I would ignore the instructor.
You should pay attention because you care about the material in the course. It should not matter whether your instructor is attractive or not, education the focus here!
I only care about how good looking is the instructor.
I know you say that now, but the reason you went to college is to get and education and hopefully a degree. It seems kind of juvenile to just pay attention because you have a crush on your professor.