You don't have to visit your local library for books...
Check out your library's schedule for interesting, free and fun events! (Thanks for the reminder, frugal friend Emily!) Some libraries sponsor off-mainstream movie viewings or poetry readings (<--- not everyone can handle poetry readings!)
Or, you can take your sweetie to the library to browse through your favorite magazines or mystery books.
Most libraries carry DVDs for rent ($1 or free)! Forget about REDBOX and rent a stack of movies to watch with your movie buff over your Good Friday day off! Go with a movie theme: Rent Alfred Hitchcock mysteries, the entire Lord of the Rings Trilogy, or the 4th Season of The Office.
If you have a lot of extra time to kill: Pick up some books about your hobbies and read through them to learn more each others interests and passions.