Stronger as a couple. We're not talking bulging biceps and the ability to lift cars.
Still, fans don't need to worry about rumours affecting Zerrie's relationship - because according to a source close to the pair, it just makes them stronger as a couple.
The insider told heat magazine: "Right now things are going from strength to strength. Perrie has learned not to pay any attention to online rumours. She completely trusts Zayn.
"She's basically moved into his place and has a wardrobe of stuff."
A mirrored wardrobe, we imagine. It is Zayn's house, after all.
As for speculation surrounding a certain video that some believed showed Zayn asking a girl back to his hotel room, Pezza was having none of it.
"Perrie trusts Zayn implicitly. She took no notice of the story whatsoever," said sourcey-pants.
"The fact that she's slowly becoming part of his family shows that this isn't a small thing. They're really serious, and fan rumours only make them stronger."
We know they mean stronger as a couple, but we can't help but imagine Pez and Zayn feeding off rumours in some weird superhero type way, before running outside to chuck some cars about with their superhuman strength.
What do you think about the comments?