Porn. I've look at it, I admit; but it is not a regular event in my life. Why look at it, though? Because they are caricatures--nothing about them is real, and by "real" I mean "normal" or "average."
The sexual circumstance isn't real, the bodies are not even close to real, the lack of any genuine emotion is not real.
For folks who have experienced childhood abuse or otherwise...casual viewing of the stuff is a way of relieving one's body of the hormones that cause pain and confusion. It is as if becoming an adult with adult's needs is a painful reliving of the experiences of childhood that one should never have had to endure.
I don't know your boyfriend's circumstances (nor, I suspect do you entirely know his story...things are hidden for life, sometimes), but sometimes, it is therapy for people...sometimes, they are trying to make the leap from something negative they view about sex to something they view positively--namely, a relationship with a nice person like yourself. In that case, he wouldn't be comparing you to them in any way that would suggest that you become more like them.