Would it be alright if I asked my gf of 3 years for nudes?
Why would you ask her for nudes?
I would like to break down her mental barriers with some naughty pictures
It's reasonable to ask someone you are dating for nudes. Intimacy is an important part of any relationship.
It's not fair that she still hasn't sent me anything yet.
Well, if you've been in a relationship for so long then just tell her what you want to see. I'm sure she would be willing to take some sexual photos for you.