A good question to ask yourself, are you able to have any type of "heart to heart" or serious discussion with him without him getting angry/upset? If yes, then there's something about this particular situation that seems to be bothering him and is causing him to be angry. Can you ask him why? or try to understand his point of view. Like waiting4 said, rational or not if you are feeling a certain way you are entitled to those feelings and should be able to share with him to come to a resolution together.

If you aren't able to have any sort of real discussions with him, you might want to evaluate what you want/expect out of the relationship.

Good luck!