Everyone has a chapter they don't read aloud. Everyone hold things in sometimes, and that's okay. It's just, holding too much in too long can actually hurt you emotionally. Now listen, I know you don't want to burden anyone with your own problems, I get it, but you can't do that to yourself. One day, you'll explode, and you might end up burning someone you really care about and change the game. If you really cared about them, you'd vent to them. Tell them everything that's been chewing away in the back of your mind forever. It might be hard, but you should let things out every once in a awhile - you'll feel so much better once you open that tight bottle and pour some out. And, I'm sure that they are there for you know matter what, and would honestly hate to see you at a state that you are stuck in for what feels like forever. Tell them what's up, and never feel bad for it. Everyone needs to vent, relieve things sometimes.