watching Porn

I found out that my boyfriend watches porn. He tells me that he didnt watch it but I found evedence on his phone. He has muiltipule times. We try and have sex as much as we can. But with our work schdules, and his son we never have time or we are to tired. He tells me that its fine and he is statisfyed. I am always trying to get him in the mood because I am always in the mood, but he either says "in a minute baby"(which never happends) or im to tired. Im really hurt. But I dont want to just let this slide. What should I do?