Hulu.com is an amazing site to watch movies and full TV episodes of great shows such as family guy, secret life, and other great shows of all ages.

I think 13 is a great age to get a cell phone. I think when ever you start to hangout with your friends without your parents or an adult is a good age also. That way you have a way to call your parents.

Yes it could be a sign of cheating. I would check into the situation.