How do you break it off nicely with someone you love very much but just cannot seem to get along with?

If there were a 'perfect' relationship in the world with absolutely no disagreements, I've had found it by now and therefore posses the key to happiness and therefore again, have giant sacks of money all over my house with giant dollar signs painted right on the fronts, just like 'ole tyme... Only you can decide if the relationship is fulfilling for you, or not. A person's actions speak volumes. What is he doing that makes you feel otherwise? Does he drive 90 miles to see you? Or does he get mad at you and spray paint your cat? What are simple issues to you? Listen. If you didn't have any difficult times with someone you would take the good times for granted and you'd quickly become very, very sick of the bore. If he's a brick and you just can't stand it one minute longer, tell him you just want to move on. It's as simple as that. Don't sugar coat it. And do it immediately.