I think it really depends on your personal tastes what sort of couples costume would most suit you. If you want to be entirely unique you could dress up as historical couples such as Anthony and Cleopatra, the mythical Zeus and Hera, Guinevere and Arthur, or King Albert and Queen Victoria. Other ideas that might work for you would be Jack Skellington and Sally, Shrek and Fiona, Batman and Catwoman or Frankenstein and his bride.
A duck costume would be a unique and creative choice. To make it even more unique stay away from character ducks, such as Daisy Duck or Daffy Duck. A home made duck costume would be the best way to assure that your costume is as unique as you.
Some great couples costumes for halloween might be peter and wendy from peter pan or robin hood and maid marion or even shrek and fiona another good couples costume would be little red riding hood and the wolf
I think it is so cute when couples do costumes together. Depending on how old you are you can do famous couples or something funny like a ketchup and mustard costume (if you have a kid then you can dress them up as a hotdog).
Two vampires, theyre totally sexy.
You can find unique Halloween costume from website such as costumeideazone.com; costumeideazone.com/CIZ/CostumesByCategories.aspx?c=9; www.halloweencostumeideas.com
The best place to fine couples Halloween costumes I think would be Party City. They have a big selection of nice, spooky, and sexy couples costumes that I think you might like.
If you don't need to dress alike, you could be Cinderella and Prince Charming. For additional information, please see the following: www.costumecraze.com/Couples-Costumes.html
Halloween Costume Ideas for Men Women and Kids. Pumpkin carving tips, Safety tips, Sexy couples Ideas, Halloween Foods http://halloween-costume-ideas-2013.blogspot.com/
If you are looking for unique costume ideas, you can find them at http://www.essortment.com/halloween-costume-ideas-50-unique-weird-ideas-52253.html. You can also find unique decorating ideas at http://www.halloween-website.com/decorating.htm
Something unique
You can find a unique and creative eyeball costume for Halloween this year at specialty costume shops, online retailers like Etsy, or by creating your own DIY version using materials like foam, fabric, and paint.
in my opinion i dont think a bloody vampire would be a good costume because alot of people r wearin it and u wont be unique.