Someotherguy, I have the same issues with my current girlfriend, it's always been like that with her. She's a beautiful woman and I love her a tonne. I'd be more worried if she was touching and nothing happened >_<
The only problem I find is after I've been in the car with her, we usually hold hands when she has one free
and I have a semi, either waiting for it to go down, tuck it into the top of my shorts (if it's fully up) or suffer the strange looks of people when I'm walking into the shops with her. She just giggles about it as I've brought the issue up with her already and knows what I'm up to these days if I take a while to get out of the car
ok, that was probably more info than you needed, but yeah.. to simplify it, it's normal, don't worry about it, be happy