I know some couples who are like glued together (usually, this happens when we start dating someone, right?). Unfortunately, I know some couples who seems never to hug each other.
The best sweet thing to do to yourgirlfriend is – give her a hug every day. Create a routine, or allocate some time, when all you need to do – is hug her. Believe me or not, this will create intimacy you both will enjoy in the future.