How do you be less frigid with your gf
Some people have this mistaken notion that smiling and being playful with your significant other causes problems. Joke around with her and involve her in your stuff. Try to see her as your best friend, if she is.
Get a little closer, share body heat... *winkwink*
Being 'frigid' means that you don't show feelings or passion to her. Or even attraction. How did you get together? Is that what you mean? Or are you just shy around her?