I am not good at expressing what I think. However, I realized it is important to tell what I think, and I am trying to now.
Today my boyfriend was supposed to come to my house, but I received a message saying that he couldn't come today in the evening. I was disappointed and irritated because of two reason. One is that we've not seen each other for a while, and the other is that I had already started to prepare for the dinner tonight.
When I got the message, I was going to ignore it because I was irritated, but I sent a message to tell him that I wanted him to tell that earlier because of the reason I wrote above. Then, he apologized and it made me feel better because I thought he understood me.