It May Have Started Off Fake...

We have to pretend to be engaged for your own protection

Fake real marriage becomes real real marriage eventually

It started out as just a bracelet that forces you to love someone...

Fake relationships are a pretty handy tool in a spy's toolbox

If you're married in an alternate universe, does it even count?

Fake dating leads to real dating, naturally

When you're forced to get married so you don't get kicked out of high school, you're in for a whirlwind of a life

To be fair, he didn't realize that it was fake

Who knew pretending to be a relationship with a gumiho would cause so many complications?

Come on, everybody knew there was something there

The contract relationship for the family inheritance worked out exactly the way conniving grandpa intended

Nothing like fighting a zombie virus to make your contract marriage a real one

She needs him to escape, he needs her divine powers.  

Contract relationship to combat a scandal becomes real, real fast

Contract marriage vs real marriage, who even knows anymore

There's a contract marriage, but it's not the OTP this time

She needs a husband/bodyguard, he needs her to access his powers.  It's strictly utilitarian.