Asking my boyfriends son to meet my family

[Illcity247]

So, I have a big brother that lives in Yorkshire. He planned to come down for his two newly adopted children to meet the family (I have 3 brothers and 3 sisters).
It was organised that my boyfriend's son (we've been together a year) was going to come along to meet them with us. I pushed for it because I see us as a family.
However, the week before my boyfriend told me his son had a football match scheduled and that he wouldn't be able to come with us. I was really devastated. I got upset and said that it's really unfair to pull out this late notice when it has been organised for months. My boyfriend said however what his son wants come first, and he wanted to go to football and not come to meet my nieces. For context his son really loves football. He is a bit of a lonesome child with few hobbies or friends. My boyfriend has his son every Saturday so I will often spend most weekends with him. My parents have both passed so my siblings are all I have.
We had a huge argument because I felt like I was not considered.
Am I being unfair saying I felt like his son could have missed one match to meet my family? My boyfriend is adamant what his son wants come first and if it happened again, the same would happen.
Friends of mine have said I didn't ask too much, but I'm not a parent and new to this step-parenting thing.

I agree with everyone else that you’re wrong on this one.

too soon to be calling yourself family. A year is nothing in terms of relationship (sorry to be blunt).

I wouldn’t really expect a boyfriend of a year to be there let alone the child he sees once a week.

Better to spend the next year or two becoming a more constant presence (as much as weekly visits allow) in his son’s life before you think about introducing him to your whole family. At the moment it’s very very new.

I'm sorry but YABU.
His son should always come first and if you're unhappy with that, you'd probably be better off finding someone that doesn't have children.

I think you are a little unreasonable. There will be other opportunities for your partner's son to meet your new nieces. I hope your meeting with them goes well, it's quite exciting!