may have missed it
A crucial moment in TPM, was when Qui-Gon took Anakin aside and told him that his focus will determine his reality. I think Anakin will turn to the dark side because he is focusing on Padme, instead of his Jedi training. Palpatine will see this and use it to his advantage to turn him. In the end, I think Anakin will kill Padme when she won't tell him where she has hidden Luke.