Let it be known that the plug-and-socket or lock-and-key costumes are not romantic. They’re creepy. If you want to having complimenting costumes, try one of these ideas that won’t scare people.

Matador and Salsa Dancer
Men: Light-weight, long-sleeved shirt; silky jacket and pants; red cape
Women: Long ruffled skirt, off shoulder top, rose hair clip

Masked Ball Couple
Men: Embroidered jacket with pants to match, classical looking boots, mask
Women: Long gown, a styled wig with large amount of hair, mask

Robin Hood and Maid Marian
Men: Feathered hat, sleeveless shirt, boots, bow and arrow
Women: Renaissance style gown with bell sleeves, waist sash, veil

20′s Gangster Couple
Men: White-striped suit, shined shoes, big (cardboard) gun
Women: Feel free to wear the same type of outfit as the men, or dress as a flapper with a knee length dress and boa

Royal Mummy and Egyptian Queen
Men: Shredded white sheet or gauze wrapped around body, Egyptian crown
Women: Long gown, Egyptian crown and wig, cape that has wrist connections, waist sash

Samurai and Geisha
Men: Long-sleeved robe tied at waist with silk sash, loose black pants, samurai sword
Women: Wrapped gown tied at waist with silk sash and large sleeves, fan or umbrella

Cowboy and Native American Princess
Men: Jeans, long sleeved button up shirt, red bandana around neck, cowboy hat, boots
Women: Braided hair, tan dress, beaded jewelry, moccasins

Ares and Aphrodite
Men: Breastplate armor, gladiator skirt, shield and sword
Women: Greek toga, gold armbands, tied sandals