I Need to Vent

I have a twin brother and today is our birthday. He has a girlfriend who is very bossy and has him wrapped around her little finger. He isn't allowed to go anywhere without her. She still lives with her parents and they stay at her parents place for weeks and weeks and when wants to go to our mother's place, his gf only allows him to stay for a couple days.
He whinges about the treatment he gets but won't stick up for himself.
I live 40 mins away from our mothers place and he is only allowed to visit me for an hour. And that's not fair on any of us. We were so close and we talked every day and he used to spend the night at my place but she has stopped that.
I miss seeing him. and when I stay at my mothers place and he's there, she won't hardly leave his side and if he's gone away from her for too long she will come find him and be very clingy.
I don't mind her, she's nice but she does seem very fake.