i dont know about you but i matured and changed a WHOLE lot emotionally and mentally in the last 5 years... if you don't think there's a /huge/ difference between a 17 year old and a 23 year old maybe you're just emotionally stunted, haven't done much growth since you were a teen and should look inwards rather than trying to blame a 17 year old for not realizing something was wrong in the heat of the moment?
