His mom acts the same way
His mom may be part of the problem. If you see that she coddles him, lives for him, revolves her life around him, wakes and breathes just to help his life and his tasks, you can see where this all began. Mothers must be attentive, of course, but his mother is still essentially his secretary and housekeeper, and he’s a grown man. If he gets that from his mom, he’ll expect it from his girlfriend.