Guys you should be more worried about the tightness of your girlfriend's vagina than the length of your penis. Life is not like porn. Porn is made up and it hates women. Do not try to be like porn actors and actresses in any way. Clear?
I'm 13 my penis is 3 inches soft and 6 inches hard I think it just depends on what age you hit puberty don't worry about your penis size it will get to average size eventually and what are penis exercises