The 22-year-old former One Direction singer and 23-year-old Little Mix member both auditioned as solo artists on different seasons of The X Factor (2010 and 2011, respectively) before getting put in their groups.
They met and started dating sometime in early 2012 before getting engaged in August 2013.
So what happened over those few years? Take a look back with us!
Click inside to see a timeline of their relationship…More Here! »
“I think we just wanted to kind of drop it out of nowhere,” Harry said of the single’s surprise release. “Usually we kind of do a big run-up to it and we thought it’d be fun this time to just kind of drop it, and it was fun.”
In case you missed it, during their interview, Louisbroke his silence about becoming a dad!
One Direction Performs “Drag Me Down” on GMA 8/4/15
On Louis: “Well, obviously I was a bit shocked, but he’s taken super well to it…[Briana Jungwirth]‘s a lovely girl.
On how Louis feels about becoming a dad: “He’s very excited with what’s going on with him at the moment and I feel that stuff like that happens sometimes. He’s taking it very seriously.”
On Zayn: “I haven’t spoken to him recently and he’s off doing his own thing and taking his time. It is a difficult thing to leave the band, but his heart wasn’t in it. You have to go with your heart and say, ‘I can’t do this anymore’ and ‘There is something out there that I do want to do that is different,’ and that’s fine.”