So I'm having some trouble with my mother and I'm not sure who's in the wrong here.

I'm a 16 year old girl and my mom has recently told me we needed to move. I'm totally okay with that, and I know us having to move isn't her fault. I'm fine with the fact that we have to move into a much smaller place, too. But after this decision had been pretty much made and discussed, my mom decided that she wanted her boyfriend to move in with us at a new place. He recently lost his house due to getting screwed over in a leasing agreement and my mom is convinced that us wanting to move and him needing to is some kind of "sign," which is annoying in itself.

Anyway, I told her I wasn't ready for that. I've met him once for about 3 minutes and she's only known him for 6 months. My abusive brother recently moved out and I was just starting to feel comfortable in our house so of course I felt adverse to is moving in with a stranger. She told me she understood and that we would continue looking for an apartment. But now all of a sudden she's decided "she needs to start being a parent and making her own decisions." She's moved her boyfriend into our house and apparently we'll be renting a house with him when one becomes available.

I'm pissed about this. She gave me a bunch of false hope only to throw me into an environment in which I am VERY uncomfortable. Her boyfriend isn't rude or anything, but the whole situation feels awkward and wrong and I'm becoming more hateful towards him as time goes on. I plan to talk with my mom again tomorrow about how uncomfortable I am living with him and how I'm not ready to live with a stranger. She's telling me not to be selfish and that it's not my choice but I think I should have some say in who I live with.

I've never gotten in the way of them dating and I didn't complain when she left on a 4 day vacation with him and told me to just take care of myself. I have no problem with them dating but him moving in is too much too fast. Please help me out with this. I don't know what else I can say to get her to understand.