I don't blame you for feeling angry. I just don't know why he doesn't respond. You say he will talk about things that are important to himself. Maybe you could say something like, "I heard you when you said you thought we should have some serious conversations. Well, I want to tell you something I think is a serious matter" and see what he says? As the saying goes, sometimes you have to get a mule's attention first. A thought, anyway.....

How he responds to that opening, I think, will be revealing. If he says something like, "Okay, what is it you want to talk about?" Then you can respond. What he says, then, might even be more revealing! You might see if he really cares about what you say or if he is more in a relationship with you for what he is getting out if it. Or if you want to stay with a guy who might not be able to acknowledge you, for whatever reasons. A good relationship should be a two-way street, when it comes to this kind of relationship in particular. Or, we hope, he will begin to respond, and you will see what you do need to do to get him to acknowledge you. And maybe he will see how the relationship is improved when he does!