Is it bad when your bf masturbates more than having sex with you?

[cutzie]

my bf of 3 years i think masturbates and looks at porn way more than he does than having sex with me. when we first started going out we always had sex like everyday and we kinda do now but if i am at work or somthing and not home he masturbates right away and i know he looks at porn like almost everyday. Its so annoying because he cant wait its like he has just got to jerk off.... am i doing something wrong, does he not find me attractive anymore? like what the hell should i do? he told me one time to be more into wanting sex and not so pushy about that but like yesterday i did than and he like wanted me to stay off of him, his excuse was his bawls hurt yada yada but i came home, the door was locked and i just know he masturbated or looked at porn but what can i do to change this or change how i am feeling???? please help