Is it me?

So I’ve been with my boyfriend for a year and he’s never been able to cum while having sex. During sex he’ll stop and jack off to cum.... is it something I’m doing? Or just me? Saturday night I came home trying to kiss him and be sexy to get him in the mood instead he just kinda pushed me away (he does this more often then not). I used his phone later that night to search something and his history for that night was all porn. It bothered me that he didn’t want to have sex with me because he was too busy watching porn. So is it something I’m doing? I get guys watch porn but to do it so much that it interferes with our relationship and sex life.... there has to be something wrong....