This latest Taylor Swift/Calvin Harris update has blown our minds

As die-hard Taylor Swift fans (shameless one, at that), we thought we knew everything there was to know about the Taylor/Calvin love story.

He's allergic to her cats but he puts up with it, they love a good gluten-free pizza and their favourite mode of transport is an inflatable swan. That's everything, right? Not quite.

Singer Selena Gomez, who happens to be one of Taylor's besties, was speaking on a New Zealand radio station this week when she dropped a serious bombshell about the couple. Chatting to hosts Guy Williams, Sharon Casey and Clint Roberts, Selena revealed that Taylor doesn't refer to her man as "Calvin," as we had all thought.

She doesn't call him by a nickname either, though. Nope, she calls him "Adam"…. which it turns out is his name IRL. Mind. Blown.

Selena made the comment when chatting about how hard to was to figure out whether to call her own ex-boyfriend Zedd by his real name, Anton.

"I made this deal," she said. "I said it to Calvin Harris too. I was like, ‘Look, you guys have two names. It really is frustrating. I need to know which name I should call you because I don’t know what is what. So I speak with the real names. Adam and Anton."

Hear the clip below from 5:25:

Born Adam Richard Wiles, Scottish DJ Calvin has been using his stage name for over a decade, but outside of work he prefers his birth title.

Of course, a couple wouldn't be a couple without some cutesy pet names, and a source reveals to HollywoodLife that Taylor does call her man "Addy" from "time to time."

Wonder if he calls her "Tay-Tay"?