How can I get my girlfriend to stop the smothering?

She always has to be holding my hand, when she's not home she calls me every chance she has. Truth is I really enjoy her company and I know she's the one. BUT...why does she always have to be sitting so close... I go out of my way to sit in the chair made for one, but then she'll just look at me all confused like, and then sit on the floor by my feet ...(touching them) sometimes it's really annoying and I never know what to say or how to approach this. I don't want to hurt her feelings but this has got to stop. She's almost 29 is this ever going to end??? If she didn't have a job she'd be all over me non stop. I'm afraid she thinks I like it because I NEVER SAY ANYTHING !! And the names she uses, my name is Adam...lol but she never calls me adam. It's Loverface, Loverlipsicle, Foxyface, Beautiful, Babyface, Loverboy... etc. etc. Tell me.