Hmm...there's going to be a lot of Joker and Harley Quinn costumes this year and a lot of Trump and Hillary costumes (although, that ain't cute!)...what decade are you two most fond of? You could dress up a your favorite couple from an 80s movie
If it's the 90s you could go as Arnold and Helga, Rocko and...I forgot his girlfriend's name (her), Stu and Didi Pickles, Spongebob and Patrick...hahaha. (So this is nostalgia-cute)
What else is cute? Are you looking for nerdy-cute? Harry Potter couples? Twiligh-Power Rangers? Avatar? Avatar the Last Airbender? Anime couples? Video game couples?
Do you want to go full-on romantic? What romantic movies are there...there's the Divergent couple. The Notebook? There are really old school couples like...the parents from the 1960-something Parent Trap movie? There are lots of other cherished, older characters...JFK and Marilyn Monroe?...hahaha! I kid.
How about foodie-cute? PB&J? Peanut butter and chocolate? French fries and ketchup? Burger and fries? Now I'm just hungry!
What about dressing up as an animal couple? Lady and the Tramp? Cats? Love birds? Pandas?
Wanna go sexy-cute? Nurse and doctor? Sexy witch and warlock? Sexy foxes?
You want to go funny-cute? Someone can go as a SJW and the other could appear to be suffering from hearing lose with fake blood coming out the ears. Go as trashy realty tv "stars." Bob from Bob's Burgers and his wife? Homer and Marge Simpson? Archer and that spy chick from Archer?
Want to go as political figures? Want to travel into the 70s? Want to dress up as internet memes?
I mean, the possibilities are endless. Narrow down what type of cute you wanna go for. I'd go for the 90s one since I'm a 90s babeh!