I guess I could correlate it to living with siblings or roommates. They get angry with each other because they constantly live in close proximity with each other, among other reasons. You're constantly wth him, so, naturally, you're going to get angry with him at times. 'Tis the life of a relationship. But, as you said, you love him. That is the key component to this. Maybe sit down and communicate your feelings to him, so the two of you can reach some sort of compromise. Or seek relationship counseling.