Personal space is important. I think there is no reason for him to criticize your dressing and whatever you do. He must accept you and love you the way you are.We all like to be with the people who we love, but there are certain times in life that you have wanted to be alone. That time you want to be just with yourself to ponder into several things that have affected you in one way or the other. We also need space in our life to decide our future, to ponder on the past and take some crucial decisions.