I Wish I Could Cry Until There Was No More Pain Left Inside

He always says goodbye and I don't ever know why. He says I don't care when he literally is the most important person in my life. he knows everything about me but he tells me that I don't care or whatever it is. I do. I always do, especially when it comes to him. Why is it goodbye.... what did I do.... I've tried to be as perfect as I can be for him... he thinks someone else matters to me but its always him. Its always going to be him. I just want to cry until I can't anymore... scream until I can't speak... but I can't. I have to show him.... I just don't know how....