I'm an INFP chick currently with an ISTJ guy. We've been together for about 2 years now, but lately (meaning the last few months) I've been unsatisfied with the relationship. I feel like he doesn't understand me and what I need, even though I understand him. It's really hard to tell him how I feel because I've tried so many times the best ways i know how (through letters, mostly, and once with a talk) but he never changes the way he does things. It's like talking to a brick wall.
This guy has been one of my closest friends for years, and in all these years he has never changed. He still acts like a 20-year-old kid. I'm 19 and sometimes feel like his mother, which I really don't think is good when I'm trying to have a fun, romantic relationship.
So my question is... As two almost completely opposite personalities, are we just destined not to work in the long run?