It's ok man he can't get any personal information other than what you have shared publicly and if you changed your pass word you can also put on a family view pin so if he some how manages to log on he needs to figure out your 4 digit code. If you have mobile authentication set up you are basically safe already because unless he has access to your phone or there is a bypass he can't get in . Your fine anyway , the only way he can figure out the pass word and the family view code is with a key logger and then he still can't figure out the mobile authentication code.