<human>: Can you condense the text into a few key points?

I [22f] have been in a relationship with my boyfriend [26m] for three years. I routinely go through periods where I feel mad at him for no apparent reason, feel like he is immature, and where I generally just don't want to spend time with him or talk to him at all. These periods last a couple days and occur maybe once a month. He'll ask to hang out and I just kind of go along with it but I'd rather sit at my home and watch a movie alone or something. I am really introverted and get exhausted after a day of talking to people all day at my job, so that could be the cause. Sometimes I will end up talking with him or visiting him but I just feel annoyed and wish I were alone or asleep.

I feel like in an "ideal" relationship the partners would always be up for spending time together, at least when they're not busy and it's feasible to do so. But sometimes at night I don't even want to respond to his texts and have a general feeling of contempt for him. I can't really decide why I would feel contempt, maybe it's the fact that I am far more motivated and less lazy than him, but that is another story.
Maybe someone can offer insight into this trivial dilemma of mine.
<bot>: I go through period where I don't want to talk to or spend time with my bf. Is this abnormal or am I fine? What do you think?