A Jake Brightman - Saying you're just into your girlfriend but really you're a

Saying you're just into your girlfriend but really you're a nut who follows her to the store and shouts her name in the aisle.

I'm just into her. Not like I follow her to the store.

I yell her name in the grocery store. What's the big deal?

I don't know why I do it. It's just fun.