Where do you think that comes from? I can certainly understand how your self confidence might slip if you state something to your bf and get absolutely no reaction and he just puts his headphones right back on. That's a bit odd really.
Was it like that in your family? Were they/are they listeners?
Can't say I have experienced what you have, there are times I go to say something and then just don't bother because I know the other person is either not going to be interested or is not in the mood to talk, so not worth saying whatever it is, but that's not quite the same thing.