[Oh god, okay, moment of truth time. Don't fucking blow this. Just ask her like a normal person.

...Not that there's any reason to freak out anyway. Since this is a purely platonic offer.]

I was just wondering if you'd wanna go somewhere together that day? You know, like dinner or something.

[You know. Like friends with absolutely no romantic interest in each other do.]

...I may have heard something about your birthday being that day. Before you start thinking I'm being weird.