After two years of being with my boyfriend, I'm confused.
What is making you confused?
We argued so much on our second anniversary and it made me sad.
If you aren't happy in a relationship it's okay to break up with them. Life is too short to stay around people that you find you no longer like.
I don't think he's the one for me and it's going to be hard.
Breaking up with a partner is not easy, especially after being in a relationship for so long. I think it's wonderful though that you realize he probably isn't right for you as you deserve to be in a relationship that is healthy and that makes you happy.