So for context I have been with my boyfriend about 7-8 months now. We're both 25 and both live with parents. I moved back in after graduating in my masters to save for a house deposit which I should have soon hopefully. Problem is my partner doesn't have the best paid job and doesn't have the best finances. He didn't manage to finish university so doesn't have a degree and now works full time but only earning around 26k ($34k), despite this he gives his mother £500 every month and still pays for groceries etc every month. He says without his contributions his mum wouldn't be able to afford to live in the house and he'd be paying a lot more in rent if he moved out so it makes sense for him to stay. His mum is getting government assistance and she has a whole masters degree but I feel like she relies on his support so much for everything. He cooks for her, drives her places etc.

I'm quite long sighted and despite not being together long I of course want us to have a future but it's a lose lose cycle. He can't save enough to leave because he's giving her money since she wouldn't manage without him and at the same time he can't afford to leave anyway because she's so reliant on the money he gives her! I told him that eventually his mum will have to figure and sort things out for herself without his help if he wants to build a future both for himself and for us and he blew up at me saying I'm selfish, inconsiderate etc but how will we ever have a future together if this is his current situation. He has 5 older siblings who have all left and moved out but since he's the youngest I feel like he's the one who's stuck between a rock and a hard place. I feel like I have worked so hard to progress in my career so that i can be financially stable when i leave but feel he's not being given the chance to do the same because of his circumstances. So AITAH for telling him about his mums behaviour and saying she needs to figure things out without him?