I’m really jealous of her :( RANT

My boyfriend’s brother’s girlfriend(let’s call her P) can’t do a single thing on her own. Once we went on a trip together as a family and stayed in a villa for a week. She had him do stuffs like putting on her necklace, putting on her shoes(she can’t differentiate which is left and right ffs) cook for her, basically EVERYTHING. She made him carry her while swimming bc she can’t swim for over two hours. He cook, he clean, he take care of her like she’s a baby except she’s 18yo. She’s overweight and not pretty at all. My boyfriend’s brother(E) is rich, handsome, kind-hearted and gentle. He treat her to expensive dinners and bought anything she wanted with his hard earned money whereas P is so entitled. She’d get angry over simple stuff and each and every time E will have to cry and beg for her forgiveness( for not replying to her text for half an hour, as example)

Despite this he moved to her city(they were in LDR before)for her. Their relationship really irks my bf and my bf’s mother because it seems like E is more like his servant rather than a bf, and so they feel E deserves so much more for what he brings to his partner. She can’t even get a cup of water for herself even though she’s perfectly healthy 🤦‍♀️

My bf’s mother is concerned because E had gotten more serious about P and is planning to marry her. Well she really irks me, but I’m really jealous of her too. It feels nice to have someone that love you so much and is willing to do stuffs for you( even tho he had gone overboard in this matter)

And yes, I know I’m being really mean about her. This is my rant because she will be my future SIL in the future and i will be the one working my ass off whereas she will be doing what she’s doing (which is nothing) because.. she can’t do nothing 🤷‍♀️

We will live in the same house(its his family thing)and share a company. Since i’m older they expect a lot more from me whereas they let her off the hook. I know this is none of my business and all but imagine a grown ass woman that can’t even put on her own dress. He brush her hair and sing her to sleep. No, he’s not treating her like a queen more like babysitting her.