matt is your boyfriend, his brothers are aware of this, but the fans aren't.

you were filming a normal car video with matt, nick, and chris. matt was on his phone looking up questions to ask you guys before the video started. When he was ready chris set up the camera and started recording.

during a little break, matt asked you to pass him his water bottle, except, he called you "baby" in the process. none of you noticed, you only did when you uploaded that video and fans went insane.