I am so glad to hear you say that you get angry when he enters the room! Well, not that I am glad that you feel that way, just glad that I am not alone! 
There are times that I will be playing with our two easy child's and I am in a great mood. Then difficult child walks in, and it's almost like the sun is sucked out of the sky. I no longer want to play, I just want to be alone. There are weekend that it is just the two of us at home, and I have to make myself do fun things with him. I hate feeling this way. I love him so much.
