My boyfriend has changed

My Muslim boyfriend has changed since we discussed marriage. He says that as I will become a wife, my yoga, late nights and tight T-shirts have to stop. Is he out of line?'

I am a 28-year-old woman, reasonably successful and currently living in the Middle East. I have been dating a Muslim man for the past two years and recently we began to discuss getting married. Subsequently he has changed dramatically. He now has a problem with my coming home late, staying at my friends' houses and drinking (which has never been excessive). He has also said that I am vain and only do yoga and the gym because I want to be noticed by people for my physical appearance. He says that it was fine when I was his girlfriend, but now that I will be a wife and a mother one day these kinds of things have to stop. Now he does not like me wearing tight T-shirts, as they show too much flesh, but my everyday attire is jeans and a top, nothing too sexy, ever. I am in turmoil; I cannot believe that this has happened so suddenly. My partner tells me I only think of myself and am extremely stubborn. None of this moderation has ever bothered me before, because it was always my choice, but these extra requests are tipping me over the edge. Is it my stubbornness, or is it that I have found an idiotic man who is out of line?