AITA for telling my boyfriend and his family that I refuse to be a stepmom?  

Break up and move on, I can't believe how the parents turned afew months into a year or so. Op is nothing more than a house keeper, cook, companion who's expected to use her own money on the sister. You've been a great girlfriend to take on so much for only being his girlfriend of two months. You will never come first to this guy. The sister was old enough to stay home by herself while you and your boyfriend went on date nights, strange that she always had to be with them. This whole family is using you. Get out now and dont look back. You will find a man who puts you and your needs first. You've been told by his own mother how your not a good girlfriend, that witch should have been thanking you for all you've done for her son and daughter. You will be happier if you leave him now because the sister is going nowhere. And if you want to stay bf and gf, sister has to go live with her own parents and they have a short time limit to make that happen or you're gone. Don't be a doormat, you deserve better and will find it.

Nta. Girl, run, she's not your responsibility she's his. Leave him to raise her the rest of the way, ignore his parents it's their responsibility not yours.

Send Chloe to her parents. Or break up. He’s not prepared for real life.

She should break up with him. It should be abundantly clear to her by now that her opinion and feelings don't matter to him and if she ends up marrying him, he'll just continue disregarding her throughout their marriage. It's better to cut her losses now than to wait until later.

Do not move in to this. Just start fading out, get busy with your own life and become unavailable enough that they actually have to take responsibility for themselves. They will probably never be appreciate anything you do while expecting you to continue doing it. Nope, if someone tells you that you are a bad partner then it's time to leave. It's not working for either party. It's obvious at that point they want control not compromise. Take back your life while it's still separated and less of a headache. Also seems like the parents are a huge problem on their own. No wonder their daughter is depressed if they are willing to essentially abandon and ignore her. Raised the son to weaponized his incompetence and just expects the GF of TWO months, not wife, to be the new mom? Ridiculous.

You have clearly expressed your logical and valid misgivings, all along the way. You tried to. Time to take care of yourself and move on.

NTA.

🤔🤔🤔

You’re being manipulated and used. That is all.