I don't think anybody answered seriously. The stomach is at the core of your body. When you allow a guy to touch that area and hold you by your waist, it's a clear indication that he wants to get closer to you. When you hug someone, your stomachs touch. Hugs from behind, his hands rest at your stomach. Having a baby? He'll sometimes kiss your stomach. Get the point?
cause your like the snuggle bear teehee
I never went for the belly unless she was with child :-)
Around the waist is the best place to grab you.