Serra
You couldn't have known. I was in love with a Sith Lord and didn't know. Some of them have ways of hiding their presence in the Force entirely, this is, I believe, what Palpatine did.
Yes, the younglings too. Don't be too suprised, Sith are capable of anything.
Serra, its hard to come to terms with. It is, the person you knew is gone and replaced with something so monsterous you wonder how you could have been so naieve and foolish, how you could have been so blind. But Anakin Skywalker was as he was hailed. He was the chosen one. But it was he as well as his son who truly brought balance to the Force, his son and his daughter, and his grandchildren.
You are thinking as you have been trained to think which is no shame on you. But he loved Padme Amidala. And that love allowed Palpatine to trick him.
Be mindful of looking in to the rest of the story. If you continue to think as you were trained and don't allow yourself to look beyond that well...You will not like what you see