My boy friend wants to waytch porn

So my bf and I have been together for two yrs now and a couple of weeks ago he said he was gonna watch porn cause he just couldnt get off an it might help. Well he didnt include me in it he just watched and masterbated leaving me sitting there naked and feeling weird well it kind of made me feel like im not good enogh and he wants to look at other women cause I cannt get the job done. Well I tried watching it with him and it just made me furious that he was getting so turned on to this I couldnt even watch it it made me sick. I no I have some insercurites and I feel bad cause couples all over watch it together with no problem but everytime he asks which is lately I just get mad I ddnt even want to havve sex cause hes prolly thinkin of some chock while hes in me its crazy I no but what do I do