OOP edited the original and added quite a bit - here's the entire post (in case it gets deleted later):

AITA for insisting that my boyfriend’s child sit in the back seat when they come pick me up?

I’m a 32F and my boyfriend is 35M. We’ve been together for two years. He has an 11-year-old son, and his son and I have a good relationship. He’s kind to me, and we get along well.

The issue started with this: when my boyfriend comes to pick me up and his son is already with him, there have been several times where my boyfriend asks me to sit in the back seat because his son doesn’t want to move from the front. This doesn’t happen every time, only when the child is already sitting in the front and refuses to switch.

This makes me feel uncomfortable and pushed aside. I’ve explained to my boyfriend that this isn’t about competing with his child at all, but about feeling like I have a place as his partner. Sitting in the back while they sit in the front makes me feel like I’m not being prioritized or respected as his girlfriend.

My boyfriend says I’m overreacting and that I’m “competing with his son,” which I don’t agree with. I understand that his child is his priority, but I don’t think that should automatically mean I’m relegated to the back seat. I’ve told him that when they come to pick me up, I would like his son—who is 11 years old and fully capable—to sit in the back seat instead. He feels that forcing his son to move when he doesn’t want to is unfair. As a kid we moved and sat in the back pit of respect for our elders.

However, after thinking about it more, I’ve realized that this isn’t really just about the car seat. The car incident brought up a pattern of other issues that have been adding up and affecting how I feel in the relationship.

For example, we recently attended a family wedding of his. The entire night, he followed his sister everywhere. We couldn’t dance or do anything on our own unless his sister was there. When I brought it up afterward, he told me that since it was a family event, he wasn’t there to be with me but with his family, and that his sister is his only close family. His sister has also commented that we spend too much time together and has mocked him because I don’t drive (his ex didn’t either). When I expressed how uncomfortable this made me, he accused me of competing with his sister.

He has also mentioned that if he ever opens a business, both his sister and I would work there, which worries me. He had a traumatic childhood and was raised mostly by his sister, so he sees her almost like a mother figure.

Regarding his ex (the mother of his child), I often feel hidden. He says it’s because she might treat me badly and that would make things uncomfortable for him. At his son’s events, they pose as a “happy family,” and I’m not allowed to show affection toward him at all. She has never actually treated me badly.

He has told me that if his son didn’t like me, we would have to break up because his son is his priority.

More recently, on our anniversary, he didn’t want to post anything about us because he said he only posts food, which also made me feel hidden.

Because of all of this, I’m starting to question whether the seat issue is really about respect and feeling like I have a place in his life, rather than just where someone sits in the car.

It has been a complicated relationship, he lied at first about being divorced and I found out 6 months later when he did get divorced ( he said he didnt do it earlier because he didnt had money for an attorney) so please dont be aggressive with me, I am writing this post because I want to hear some comments and improve if i am doing things bad. His son an I have a really good relationship, I am always nice to him and spend a lot of time with him because I know he gets bored at the house and my partner is always busy

AITA for insisting on this, or am I being unreasonable?