For a few years, Carli Bybel and Brett Caprioni seemed like a true YouTube power couple. She posted beauty tutorials, he posted fitness and nutrition tips, and they often posted videos together for their combined 6.6 million subscribers. But then, in November, Carli announced their split, and everyone wants to know why she and Brett broke up.

Unfortunately for us gossips, both of these YouTube stars have been keeping mum on why they ended the relationship that they started back in 2013. For what it's worth, though, here's what Carli said in her November 2017 "Life Update Q&A" video.

She said, "We are broken up. I know, I'm sorry to be the bearer of bad news. I know you guys are probably upset, but think about how I feel. It wasn't something that was fun or ever planned or what I thought would ever happen, but it is the reality. I respect him so much as a person, and I know we'll remain friends — hopefully forever — because we have been through so much together.

"People change and people grow apart… There comes a time when you need to worry about you and your happiness, and that needs to come first and foremost … I believe that both people have to be happy. I'm gonna be OK, and he's gonna be OK. And you never know what the future brings, but I feel that this is the best thing for both of us at this point in our lives. Maybe one day I'll talk a little more in detail, but for now, that's all I really have to say about that subject."

Not very illuminating, right? And for his part, Brett was even more circumspect with what he said in his May 2018 "Starting Over" video. "With everything that's happened the past six, seven months, there's been a lot of change that I've had to endure," he said. "And it's been a good thing, it's been an eye-opening experience for me. The transition has been a little harder than I anticipated as far as the things that have to go on in my life for me to keep going and get better… Happiness is important in anything you do in life, people around you, what you do. You need to be happy."

Despite the split, though, it's hard to imagine these influencers won't be influences in each other's lives. Carli has known Brett since she was in kindergarten, after all, so they have a lot of history keeping them connected. Hey, if Hollywood celebs can forge romantic reunions, they can, too!