My girl of 9yrs wasnt like that either until guess what?? One day she was all of a sudden like that. We went through all of our 20's not experiencing life and that ruined our relationship. She all of a sudden wanted to be a slut and a party girl. People change whether its for the good or the bad. So for god sakes you are 20 live life,have fun, and be patient. If she is having doubts there is a reason. Dont waste 9 years like i did.