sexual frustration

My sex drive is higher than my bfs and he doesnt seem to want to do anything. Ive tried masturbation and porn yet nothing works and its causing me to have thoughts about cheating. Dont get me wrong, i love him and would never want to do something like that but its really hard to handle. He points out that im "overly horny" and it makes me feel really shitty. I havent talked about it with him in depth but yeah idk what to do. Any advice?