Well I'm just afraid you're going to fall into the "Good Friend E" spot and you don't want to be there. Cause then you'll start hearing stuff like "I don't want to ruin our friendship." and "You want to meet my boyfriend? I think you'll like him."
My suggestion is after this Pepperbellies thing, that ever that is, that you get her alone and just say "Hey you wanna do something Friday" and if she says "Sure, I'll go see what the guys want to do." you go "I was thinking maybe it would be just you and me." and when she says "like a date?" You say "YES!"