I love my fiancee but am starting to get sick of him?

I wouldn't leave just yet. Five yrs is a long time. I would tell him you need to sit down and talk with him. Do not raise your voice or get mad be calm and tell him how you feel. All couples hit rough spots and need improvement on their communication skills.Just talk it out and things should get better. Everybody gets annoyed with their partner sometimes but don't let yourself get upset over stupid things because then it feels like nothing can go right. Trust me I've had similar feelings in a situation like this. We decided to try to work it out and we're doing great now.