Sexual Deviant Boyfriend- too much?

Is having two closet full of p 0 r n o g r a p h i c magazines and videos, and masterbating 5 or more times per week while in a steady relationship where the couple has sex two to three times each weekend normal for a 31 year old man? Plus a strong interest in bondage. Also, is it normal for a 31 year old man to get an erection from just looking at other women? i.e. at his partners halloween party getting an erection while looking at a pretty girl from across the room?