You can really show off your best assets: If you have it-Let everyone know about it.
You won't judge each other based on normal looks: Maybe he usually dates skinny hipsters and you usually go for the suited finance type. Maybe you're both shallow. But in the moonlit night filled with costumed boozehounds, it's impossible to judge anything except vampires from zombies. You won't even be able to properly assess his teeth with those fangs in. Which just goes to show: you should never judge a book by its cover or a man by his poly-blend work slacks.
You wouldn't have met him otherwise: On Halloween, you meet a lot of people you would never speak to on a normal day of the year. You show up at random friends-of-friends parties, talk to dudes in creepy Sesame Street costumes, and find yourself off to another party in a car full of strangers. Hell, it's the one time in the year when you were taught to knock on doors and talk to strangers!
You're both high--High on sugar: Is there anything sweeter than the freecavity-inducing candy corn smiles and fun-size Snickers bars? Maybe it's the sugar high, maybe it's the scantily clad crowd but oh my heaven on earth you feel amazing and could pretty much fall in love with a street light if it leaned in for the kiss.
You're both frightened: You know why they take those couples on The Bachelor zip lining across 200 foot cliffs and bungie jumping off of bridges? To scare them. Getting through a frightening experience together creates a mental bond. Imagine how close a haunted house party will bring you two.
Your inhibitions are lowered: Your inhibitions are normally lowered when you drink so much day-glo punch. But when you're this drunk and dressed like a stripper, your inhibitions really plunge to rock bottom.
It reminds you of being a kid again: Ignore the skin, the drinks and the booze. That's all silly adult fluff. At the heart of Halloween remains a collective memory of trick or treating with an oversized pillowcase, picking through the crappy Dum Dums to get to the chocolate and getting a stomach ache from gorging on said chocolate. There's something magical and sweet about Halloween that makes you feel nostalgic and comfortable.
It's a really good how we met: Does anyone really want to brag about meeting their significant other on OKCupid? It's way cuter to talk about that night he was dressed as the Big Bad Wolf and you were decked out with your friends in matching Kardashian outfits. You bumped into him when you were looking for your stand-in for Bruce Jenner and it was love at first sight.