6.5" is above the national average, so don't worry about that. And be careful with the tips you may get for adding inches to your jt, because pumping looks vile and stretching will, I'd have thought, take girth. And all of us girls prefer girth over length!!
With regard to being shy, well, just get to know someone first. The internet is a great way of combatting shyness, you get to know someone from the inside out as opposed to the other way round in more conventional sitations. Once you feel confident chatting online with someone you'll find it easier when/if you meet up with that person in real life.
Good luck, and welcome x