Can you? Yes! But what do you mean by "ontario???"
no, it's illegal for someone under the age of 18 to date someone 18 or older.
As long as she has parental permission. Otherwise she has to live where her parents say.
No, not until she is 18.
Until you
You have to be 16 to move out in Ontario. http://www.kidshelpphone.ca/en/forums_en/ViewMessage.aspx?MSGID=96194
NO. And you attempt to do this, boyfriend's parents are likely going to find themselves facing a truckload of legal problems.
I believe that when you are sixteen in Ontario you can leave and even if your parents want you to come back the police cannot make you. Keep in mind that at sixteen you are still a minor and your parents are still legally responsible for you (i.e. if you break into a store, damage someone's property...etc.) you are "legal" when you are 18 for sure. And can move out then with or without your parents consent.
She is not yet an adult. Until she turns 18, the parents are responsible for her and where she lives.
The parents remain responsible for the child. They also determine where the child lives.
No, you are a minor in most countries in the world until you are 18 (21 in some countries) and up to that time you are the responsibility of and under the control of your parents or legal guardian.
No.
Minors can only move with their parents consent.
Safe answer would be no to avoid any possible issue with the law. We do not need to see the 20 year old boyfriend ending up in prison and his parents facing legal issues.
If you are legally married in Ontario, your marriage will be recognized in most of the world including the US.