Sometimes love, attraction and happiness simply aren't enough to make a relationship work. This seems to be the case for Joe Jonas and Gigi Hadid, who called it quits after five months of dating, and ET is taking a look at what went wrong.
In the weeks leading up to their split, the couple seemed to be in a good place. Just last week, the 20-year-old model spoke with The Insider at the Victoria's Secret Fashion Show casting event where she gushed over Jonas and their relationship, sharing, "He's super supportive and we've been friends for so long it's just easy and great."
WATCH: Joe Jonas and Gigi Hadid Break Up After Only a Few Months of Dating
Two weeks ago, The Insider spoke with Jonas about the music video for his band DNCE's single "Cake by the Ocean," and the 26-year-old singer had nothing but praise for his then-girlfriend, who directed the video.
"She did a great job! It was really cool for people to see on set she's a boss," Jonas said of Hadid's directing. "She had a megaphone, she was in to it, she had her little notebook. She didn't half ass it. I think she has a passion for stuff like this."
WATCH: 6 Reasons Why Joe Jonas and Gigi Hadid Are Our New Favorite Couple
On Tuesday, the night before news of their split broke, Jonas hosted a dinner at the Chateau Marmont to celebrate the start of Movember. Jonas "seemed really happy to be with his friends and brother [Nick]," a source tells ET. "He kept busy socializing throughout the night and was very much in the moment, he didn't check his phone that much."
"He's doing OK," the source tells ET. "He's doing good."
So it appears the split was amicable, and that the two still cared for each other in the days leading up to their break-up. So what went wrong?
WATCH: Gigi Hadid Says Joe Jonas First Asked Her Out When She Was 13
According to ET's source, the problem stems from Jonas and Hadid's busy schedules and flourishing careers which have them flying across the globe. Despite often talking and Facetiming, the distance proved to be an insurmountable obstacle.
ET's source says Hadid and Jonas see the split as a chance for them to work on their individual projects and passions.
Jonas and Hadid were first rumored to be dating in May, but it wasn't until September when Jonas first opened up to ET about their relationship, gushing over watching Hadid walk the runway at New York Fashion Week.
WATCH: Gigi Hadid Fights Back Against Body Shamers, While Joe Jonas Sweetly Supports Her
"I was able to see her walk in Tommy [Hilfiger] and it was great," Jonas said, beaming.
Hadid will be taking to the runway again during her first Victoria's Secret Fashion Show appearance, which airs Dec. 8 at 10 p.m. on CBS.
For more on Jonas and Hadid's decision to go their separate ways, check out the video below.