Six months ago, there was a pretty good chance you had no idea who Charlie Puth was.

Fast-forward to today, and he -- along with his collaborator, Wiz Khalifia -- have a #1 song, "See You Again," on the Billboard Hot 100 for the fourth straight week.

Pretty impressive for a guy who wrote the song for the "Furious 7" soundtrack in only 10 minutes.

"I wrote the song on July 17 at 6 p.m. -- I know that because I have it saved in my phone, the lyric note. ... I want to frame that," Charlie recently told MTV News. "I wrote it in 10 minutes, which is very unusual -- usually songs take a little bit longer to write for me."

While writing the song, the singer had two people in mind, the late Paul Walker and "my friend who passed away in a very similar way," he said, calling the writing experience a "very real moment" -- which it was for Wiz as well.

"I sent it off to Wiz and we actually never really recorded in the same studio, but he told me he recorded at Snoop Dogg's house," he said. "And he wrote it really quickly, too, because it came from a real place for him as well."

As we all know, Wiz and Charlie -- who recently released his new EP Some Type Of Love -- eventually did meet each other, but the first encounter didn't go exactly as planned.

"We were rehearsing for 'Jimmy Fallon' and I was kind of nervous because I hadn't met the guy and we have such a bond already. I didn't realize how tall he was -- he walked in very prominently with his whole crew and entourage," Charlie said, before adding that Wiz just nodded his head at him. "And he just walked away and I was like 'Cool I think that went well. I think he likes me.'"

And Wiz does. Charlie said the two exchange texts often, which I imagine is just a series of "We're awesome"s -- since the song is such a massive hit.