My brother seems to be stuck in a relationship which from the outside doesn't sound very fun.

The fat girl claims to have anxiety, and doesn't leave the house often, mostly just sits on the couch playing games. My brother has to work all day and then go shopping, and then cook dinner for her and doesn't get to eat until about 9pm. She claims she gets bad paranoia at the supermarket but she is perfectly OK going to other stores like walmart to buy herself things. The least she could do is make an online order for food while hes at work

She can be very rude and arrogant towards other people. I seen her bossing him around a lot. Her cat runs the house and my brother isn't allowed pets of his own even though he loves pets. He isn't allowed to have his friends or family stay over either, but her friends come often.

If they go away on the weekends it is usually somewhere she wants to go ie. visit her family. I barely even see him any more, we used to hang out a lot more.

His salary is much higher than hers, she works from home but only for a few hours each day. She doesn't help him in the garden, never cooks, and just seems generally selfish. She is taking away the things he wants to do, she talked him out of going to the gym, she's trying to get him to trade in his fancy car for a Japanese import (because its a 'sex car'). Whenever he wants to go somewhere it's up to her if he goes or not, or he is hours late with no explanation. Sometimes he has to rush home too

She, and her parents are pressuring him into buying a house with her, should I even be trying to offer him advice? He probably wants kids one day but she doesn't ever, because she's worried they will inherit her social issues.

It's his first girlfriend, so obviously he will be pretty attached. But I have no doubt that he will have plenty of other options, he is slim handsome and has money.

Sucks because I want him to move forwards in life and go places but it looks like she is dragging him down. Does he need to learn the hard way? It is hard to watch because I see his happiness and freedom slowly draining away, but is it better if I just don't get involved?