First, find out if it is legal in the state/country you reside. I know of a couple American teen boys that were only a couple years older than their female partners and yet got long prison sentences for having sex with a minor. As incredible as this may seem, the law is not always fair or intended to be. Here is a link that should help.
http://www.avert.org/aofconsent.htm
Second, if it is legal, then you have to deal with her parents. If her parents disapprove then you have to back off and stay away. Most parents of a teen girl would not approve of their daughter seeing a boy three years older than her. I have no idea what her parents/guardians think, you have to find out.
Three years age difference means nothing when you are older but at a younger age the maturity level is wide.
First, find out if it is legal in the state/country you reside. I know of a couple American teen boys that were only a couple years older than their female partners and yet got long prison sentences for having sex with a minor. As incredible as this may seem, the law is not always fair or intended to be. Here is a link that should help.
http://www.avert.org/aofconsent.htm
Second, if it is legal, then you have to deal with her parents. If her parents disapprove then you have to back off and stay away. Most parents of a teen girl would not approve of their daughter seeing a boy three years older than her. I have no idea what her parents/guardians think, you have to find out.
Three years age difference means nothing when you are older but at a younger age the maturity level is wide.
Good luck.