I don't know where you are; but in the Northwest, October is a little chilly. I'm not a camping expert by any means; but even in summer it's colder than you'd think. Tent, sleeping bags, lots! Lanterns, cookware, camp stove or the ability to make a good campfire. Coffee pot! Food! Bug spray. Some campgrounds have bathroom facilities, and I would recommend that unless you don't mind "going" in the great outdoors.
Have fun, I would love to go camping with just my husby, sounds romantical!