Shawn Mendes & Camila Cabello Got into a 'Sh-tload of Fights' While Writing 'IKWYDLS'

Shawn Mendes puts a hoodie over his head while making his way through LAX Airport with his guitar on Sunday (November 29) in Los Angeles.

The 17-year-old singer recently opened up about writing “I Know What You Did Last Summer” with Camila Cabello, which he told Rolling Stone led to a “sh-tload of fights.”

Still, Camila said, “I am very lucky that we wrote the song because I also got a really good friendship out of that.”

She also revealed the day they first met! “I honestly remember so clearly the first day we met,” Camila said. “He was just playing with a guitar, and I was like, ‘Hi! Nice to meet you.’ We didn’t really hang around much during Austin [Mahone]‘s tour. It was Shawn‘s first tour ever, so he was constantly working, and if he wasn’t working, he was in his bus playing guitar and being a loner.”

20+ pics inside of Shawn Mendes traveling via LAX…