OK, well, he can't see to read it now anyway. Man, he needs eye protection! I hope he is alright, but it needs to be looked at with a slit microscope.
Your H sounds a lot like my son, the Leo. He is very impetuous and does and says things without thinking. He has a very sweet side, but a very short temper.
You on the other hand, think things through and brood on them. You anger slowly and hold it for a long time. I don't know what your sign is, but you sound like me, a Cancer.
Anyway, send me the letter and I'll look at it. It is ambushing to send the cookie cake one minute and an I hate you letter the next. Your H is clearly thoughtless in how he deals with you, but you need to do better than that.