I feel like his sisters have his ear

Literally as the title says....I feel like his three sisters have his ear and can easily sway him.

Here are some examples.

I really wanted our parents (his parents and my parents) to meet. My parents were willing to have a lunch at their house. Now one of his sisters still live at home because she's the youngest at 13. So the invitation was extended to her because she's a kid and she's in the parents home anyways. His older sister was mad that I didn't invite her and her husband and their 3 children. Because she got mad, my boyfriend backed out and it didn't even happen.

Another time, he and I were planning an over night getaway for our two year anniversary of dating. One if his sisters got wind of it and told him she thought it was inappropriate to have overnights before marriage. Then she had her pastor call him and discourage him so we never went away.

Or now we are seriously planning to get married some day. For fun we were talking about guests and having a small wedding around 50 people if covid allowed. He was fine with it when we talked about it. His family knows we want to get married some day too. And two sisters asked how big of a wedding we would want. I said small around 50 and they were upset because his side comes from a big family and they went on about how this person and this person all have to be invited and how 50 people minimum is their side alone. Them making a big deal about it made him say well if we don't have a big wedding with everyone then there shouldn't be a wedding.

Another time I needed help moving furniture. I asked for his help two weeks before and he said yes. Literally 2 hours before he bailed because his sisters decided at the last second that they wanted to take their mom out to dinner and made him feel guilty like he didn't care enough about mom for not coming. So he went.

Also at the same time, one of his sisters is always pretty rude but then she turns like I've never been a bridesmaid before and I've always wanted to be one. And no way in hell. Cause I don't like her. And even if I did she would take over plus the other sister would freak and demand to be in the wedding too.

SIGH