His friends have priorities before me in everything. Or am I overthinking it?

Anonymni
I apologize if this is a stupid question maybe I´m just overthinking and just need some kind words to calm down.
Recently I met a guy on a dating app, we started talking and now we´re dating. I don´t want to rush any things but we agree that we will take this relationship seriously.
We know each other for about 3 month but started talking about vacations together, taking some one off classes together etc. He even invited me to come to him to London. He has some business there during the summer and he told me to come there with him and after he´ll be finished we can extend the stay there and spend a vacation there. We came with so many places to see.
My problem now started with the fact that now his friend is coming to visit him here so either we will spend just 2 days there or I can be there on my own. Which I don´t feel like to be, because we planned is as our first vacation together.
If this was a unique thing I would probably just brush it off. But he doesn´t have any other time for vacation together, but for sure he has enough time for vacation with his friends. Those one off classes are so hard to find when it involves us, but when he can go with friends it´s no problem finding them and having time for them. Because when I found some of them it is always not a good time.
He also told me that he would like to go canoeing with me, and not his friends just because they always get drunk right away. But guess what, no time for doing that with me, but yes enough time to organize it with his friends on his initiative.
I know that I am new in his life and I for sure want him spend his time with his friends, don´t get me wrong. I just really hate, that they are always the biggest priority with no problems fitting them in his life. I just sometimes feel like an afterthought.

Could you please help me understand it, please?
His friends have priorities before me in everything. Or am I overthinking it?
3 Opinion