Most Helpful Guy
Most Helpful Girl
I know it sounds dull, but I think browsing through a bookstore is a good idea. This way you can:
a) find out if they enjoy reading
b) find out what exactly they are reading and why (it says a lot about someone sometimes, for example, if they are in the middle of reading "Allies in Healing" as opposed to any Robert Jordan novel.
c) find out if they find interest in you and what you read
Book browsing also allows you both to talk about different topics. So if you find that you're having more to talk about in the self-help section, great. If one of you wants to go look at a Celine Dion biography, maybe not so great.
If neither of you read, then go ahead and scrap my idea and just go play mini golf.