No sexy time

My boyfriend & I have been together for almost 2 years now. For the last 8 months we haven't had sex nor any other sexual activity. He really acts like he has no sexual interest in me at all. I try to start something all the time & I get shut down. We've discussed it before & he never really wants to get much into it without getting mad. He tells me he is just struggling through some things & work is really stressing him out. I love him to death but I can't continue to go on with no affection. What am I suppose to do? ):