I don't know if you ever took your girfriend out fishing before, but you you should.  They really like it, well most of them anyway.  It can be a thrilling experience for them!  Even though they'll have trouble casting, setting the hook, and reeling in the fish.  It's a whole new learning experience for them.  When they catch their first big fish, they'll be amazed.  So take my word for it, when you get a chance take her out fishing!  Not really good for a first date or anything, but it's good for a fourth or fifth date.