what should I do???

Well everyone this is a really hard situation for me and I need to get your opinions about it: I met this guy through my police academy, he was one of my instructors...we started to go out and eventually got into and relationship. He is 49 and I will be 35... He has 4 kids from 2 different mamas and currently divorce and living on his own. Approximately in March things started to change and he stop texting, calling, and we didn't see each other for a while. I talked to him and he said it was because of his situation about the kid and baby mama drama and stress at work. Eventually we talked out of the problem and keep our relationship...lately I started to point out again his lack of communication and that he is not paying as much interest anymore to the relationship. His replied via text was that he had too much on his plate with his kids, work (FYI he works with 2 vicious ladies that are making his life miserable), his family and myself and that it was too much crap to handle, and that he was feeling burned out. I texted him that he needed to stop being a workaholic an give time to himself. Then I told him that I notice every time I told him how I was feeling he try to put me in cloud 9 and be nice with me for couple days all loving but eventually come back to his ignoring mode. We set a date to talk and to see what happen...we met, had lunch, and when I started to bring the topic about us...he kept switching to other topics like seeing each other more, about my school and so forth, but I noticed he was evading the topic...then he said he had to go cu he was tired... After he left, I texted him that why he had to act like a freaking kid and not talk to me... His reply was: do you think I like the way things are??? I said to him I don't know cuz you never communicate with me...that was a week ago and haven't heard from him.