I've been having problems in my relationship since I moved in with DP 2 years ago.
Whenever I try to talk about sensitive issues to do with our relationship, he clams up and won't communicate at all. I don't really want to get into specifics for fear of being outed, but they are not huge unworkable issues just things I think we could both discuss and find a solution that suits both of us. He has found several ways to not communicate and they are either telling me that I'm "making a fuss over nothing" or "being ridiculous" or he will find some random thing to pick on me for, therefore changing the conversation from the issue I want to talk about to something completely different or he will literally try and distract me by talking about what the dog is doing or start laughing or commenting about what is on the TV in the background. Occassionally, he will simply refuse to talk about it at all, by saying that he is not willing to change and he has always done (whatever it is we are talking about) and therefore I have to accept it.
Of course, all these situations leave me feeling very frustrated. I just want to sit down and communicate and move the relationship forward. None of the issues are unworkable and I am more than willing to compromise but I don't get him to listen to my side at all. 
Things are getting worse and worse and I ended up feeling very very low a few weeks ago and had to go to my doctors to get something to help me sleep and to help the terrible nausea and headaches I was suffering due to the tension, as I am bottling everything up and can't sleep with thinking about it all. I am seriously considering leaving him as I can't see a future with a man who won't communicate with me.
So, I know things have to change one way or the other. We have been on the waiting list for Relate for months and I have started having therapy for myself as I am seriously wondering why I am keeping so quiet and so frightened of upsetting the apple cart.
When he stonewalls me like this, my instant reaction is to shut up because I feel so rejected and then I bottle it all up, it gets to me after a few weeks and I try and broach the subject in a different way, and I get the same reaction or by this time another issue might have reared it's head. In 2 years, I have probably only really tried talking to him like this 5 or 6 times so it's not like I'm constantly at him.
I've tried empathasising (he has family issues that cause us all sorts of problems because he won't address them), I sit with him almost every night agreeing what a terrible situation he is in and allowing him to vent.
I've tried pushing the issue, but he just builds up another couple of layers on the wall and sometimes literally says "I am not talking to you".
I have tried approaching him at different times, either asking him to make time for me or by simply dropping the conversation into another conversation, both ways end up the same.
Within a few minutes, he is back to "normal" and wanting to talk about the day or the weather or some trivia on TV just like nothing has happened.
Invariably I give in and try to get back to normality and try to bury my feelings, but I know this isn't doing me any good.
I'm naturally a very passive person although I can fight my corner when necessary, so it's not as if I am ranting and raving at him. I'm always calm when I initiate the conversation, although inevitably, frustrated by the end.
So, of course, he is getting exactly what he wants - me to shut up and stop making him uncomfortable and for me to carry on listening and chatting about what he wants to discuss and for him to listen to me talking about everyday trivia.
So I am thinking I am giving him what he is asking for, there is no consequence to his actions for him. I am having all the consequences.
So I tried to talk to him last night about an unresolved issue from when I first moved in 2 years ago which he refused to talk about then or the few times I have tried to bring it up since. He told me that I am talking about old stuff, (even though it affected how he behaved last night because he obviously didn't understand the point I was trying to make 2 years ago), because he didn't listen, he told me that I'm not listening to him because he does understand and it's old stuff and he doesn't want to discuss it. Literally 2 mins later, he is talking about the days news as if nothing has happened and wanting a cuddle on the sofa. The old me would have given in and chatted and cuddled him and not wanted to "cause a scene". But I know that hasn't got me anywhere but upsetting myself.
So with all this in mind, am I wrong to now refuse to engage in conversations about trivia until he talks and listens to me about the issue I want to discuss? I feel like it might, just might be a way to make him listen because he won't want an ongoing atmosphere. It's not really my style but sitting down and discussing things obviously isn't something he WANTS to do but in my opinion he needs to do it for the sake of our relationship.
I also want to mention what he is good at in the relationship; he is very thoughtful in lots of ways, does lots of things around the house, washes up everynight, helps with dinner, brings me coffee in bed, helps with kid related stuff, he is very cuddly and affectionate, he has a great sense of humour and we get on well in this way. He is generous and likes to spoil me by taking me out and wining and dining me, we also spend lots of quality time together, he likes shopping too.
In some ways I feel he would do anything to help me, it's almost as though, he does all this stuff to "make up" for the fact he can't communicate with me on a deeper level. I suppose I feel bad and guilty for pushing him away but I just don't know what else to do. 