Ill try to keep a long story short!

My boyfriend of 4 years works a lot, we live together yesterday was my birthday and nothing was really acknowledged. I race once a month May-August, Friday & Saturday at 7pm. Yesterday my bday he worked late and wouldn’t make it totally understandable. Today Saturday he woke up early and went for breakfast with his friend & hung out/worked on his truck all day with him. Tells me always that he doesn’t like going to my races to help me out with my car on his days off. “He would rather be doing other stuff” I just kind of thought because it was my birthday weekend he would have made an effort to be there to spend time together. I work a lot too and i feel like if he had a hobby i wouldn’t want to miss out so i cant relate to how he is feeling about it. I also leave next Friday for a vacation with my parents so i figured he would hangout with me the last weekend before i go for 2 weeks.

I have brought up how i feel and the conversation goes nowhere. Am I being unreasonable?