We don't have enough PDA?

I am in a very, very healthy relationship with the girl of my dreams. Lately, our friends have been saying we don't show enough affection when we're around each other. We hug every time we see each other and every time we say good-bye. We're not the kissing-when-it's-not-a-perfect-moment type, but we need some other way. Any ideas? Please help!