Would this make you sad ?

My bf’s family has a group chat. It’s him, his parents and his sister.

I recently just found out that his sister’s bf is also part of it now.

It kind of hurt my feelings that they didn’t add me to it as well.

We have been together for 4 years. And I think his sister and her bf have been together about 4-5 years.

I am at their house for every holiday. I go on their family vacations every year. They act like they like me a lot.

It just hurts that they have him in it and not me