I Know What You Did Last Summer

## Music Video

"**I Know What You Did Last Summer**" is a song by Shawn Mendes and Camila Cabello and the lead single from Shawn Mendes's debut studio album, *Handwritten,* released on November 18, 2015. It reached the top 20 on the US Billboard Hot 100 and on the Canadian Hot 100. On January 30  **I Know What You Did Last Summer** hit the Top 10. Mendes and Cabello promoted the song with several televised performances, including on *The Tonight Show Starring Jimmy Fallon* and at the 2016 People's Choice Awards.

## Background

"I Know What You Did Last Summer" was written backstage spontaneously at Taylor Swift's The 1989 World Tour concert on July 10th in New Jersey, in which Mendes was an opening act and Cabello was the surprise guest as part of the group Fifth Harmony. "We were just backstage. There were like 100 people in my dressing room at the time, and it was madness back there, but I had this guitar and I was just jamming out, and we basically wrote a pre-chorus and a chorus in like 30 minutes," Mendes said in a video released about the making of this song. "And we planned to go into the studio, and it was like an 11-hour studio session where we finished writing the song." After a live performance on Live with Kelly and Michael, Cabello said, "We were just kind of jamming out. We weren’t really consciously writing a song. We kind of started spitting out melodies and put lyrics to it; I don't think we knew we had a song."

The artists co-wrote "I Know What You Did Last Summer" with its producers Ido Zmishlany and Noel Zancanella, with Bill Withers receiving songwriting credits for the sampling of his 1971 single "Ain't No Sunshine". Cabello described "I Know What You Did Last Summer" as a "conversation between two people in a relationship where it's dying, but nobody wants to admit that it's dying."

## Commercial performance

"I Know What You Did Last Summer" debuted at number ninety-seven on Billboard Hot 100 for the chart dated December 5, 2015, and jumped to number fifty-five on the following week. On the week ending January 9, 2016, the song jumped from number forty-six to number thirty-three. The song has since peaked at number twenty for the chart dated January 30, 2016, becoming Mendes' second top 20 single, after "Stitches", which peaked at number four on October 31, 2015.

## Music video

A music video for the song was released on November 20, 2015, and was directed by Ryan Pallotta. In the video, Mendes, and Cabello, age 17 and 18 respectively at the time of the making of the song and filming of the video, are seen walking through a dark and desolated landscape. Cabello singing about how she cheated on Mendes but tries to convince him she didn't mean to. They keep trying to walk towards each other but aren't moving. They are seen weathering a sandstorm, followed by a snowstorm and a rainstorm which culminates in a standoff of sorts as they desperately attempt to repair their relationship. The music video has over 148 million views, making it Mendes's second Vevo-certified video, and 1.46 million likes as of August 12, 2016.

## Live performances

Mendes and Cabello's first televised performance of "I Know What You Did Last Summer" was on Live with Kelly and Michael on November 20, 2015. They also performed the song on The Late Late Show with James Corden on November 24, 2015, and at Pitbull's New Year's Revolution on December 31, 2015, in Miami, Florida. Mendes and Cabello performed the track again on The Tonight Show Starring Jimmy Fallon on January 4, 2016.

Preceded by a performance of "Stitches", Mendes and Cabello sang "I Know What You Did Last Summer" at the 2016 People's Choice Awards. They also performed together on The Ellen DeGeneres Show on February 17, 2016.

## Lyrics

**[Intro: Both]**

Ah-ah, he-ey

Ah-ah, ah-ah

Ah-ah, he-ey

Ah-ah, ah-ah

**[Verse 1: Camila Cabello]**

He knows

Dirty secrets that I keep

Does he know it's killing me?

He knows, he knows

D-d-does he know

Another's hands have touched my skin?

I won't tell him where I've been

He knows, he knows, he knows

**[Pre-Chorus: Both, Shawn Mendes, Camila Cabello]**

It's tearing me apart

She's slipping away (I'm slipping away)

Am I just hanging on to all the words she used to say?

The pictures on her phone

She's not coming home (I'm not coming home)

Coming home, coming home

**[Chorus: Both, Shawn Mendes, Camila Cabello]**

I know what you did last summer (Ah-ah)

Just lied to me, "There's no other" (He-ey)

I know what you did last summer

Tell me where you've been

I know what you did last summer (Ah-ah)

Look me in the eyes, my lover (He-ey)

I know what you did last summer

Tell me where you've been

**[Post-Chorus: Both, Shawn Mendes, Camila Cabello]**

I know, I know, I know, I know

I know, I know, I know (Ah-ah)

(He-ey)

I know, I know, I know, I know

I know, I know, I know (Ah-ah, ah-ah)

I didn't mean it, no, I didn't mean it, mean it, no

(Ah-ah, he-ey)

Can't seem to let you go, can't seem to hold you close

I know

**[Verse 2: Shawn Mendes]**

When she looks me in the eyes

They don't seem as bright

No more, no more

I know

That she loved me at one time

Would I promise her that night

Cross my heart and hope to die

**[Pre-Chorus: Both, Shawn Mendes, Camila Cabello]**

It's tearing me apart (It's tearing me apart)

She's slipping away (I'm slipping away)

Am I just hanging on to all the words she used to say?

The pictures on her phone (The pictures on my phone)

She's not coming home (I'm not coming home)

Oh, na, na, na, yeah

**[Chorus: Both, Shawn Mendes, Camila Cabello]**

I know what you did last summer (Ah-ah)

Just lied to me, "There's no other" (He-ey)

I know what you did last summer

Tell me where you've been

I know what you did last summer (Ah-ah)

Look me in the eyes, my lover (He-ey)

I know what you did last summer

Tell me where you've been

**[Bridge: Both, Shawn Mendes, Camila Cabello]**

I know, I know, I know, I know

I know, I know, I know

I know, I know, I know, I know

I know, I know, I know (No, no, no)

Can't seem to let you go, can't seem to keep you close

(Hold me close)

Can't seem to let you go, can't seem to keep you close

(You know I didn't mean it, though)

Tell me where you've been lately

Tell me where you've been lately

(Just hold me close)

Tell me where you've been lately

Tell me where you've been lately

(Don't, don't, don't, don't let me go)

Can't seem to keep you close, can't seem to let you go

(I didn't mean it, though)

I know you didn't mean it, though

I know you didn't mean it, though

(I don't wanna let you go)

Tell me you didn't mean it, though

Tell me you didn't mean it, though (No, no, no)

(Can't seem to let you go, seem to let you go)

I know you didn't mean it, though. I wanna know you mean it though

(Hold me close)

I know you didn't mean it though

I know you didn't mean it though

(Just hold me close)

I can't seem to let you go, can't seem to hold you close

**[Chorus: Both, Shawn Mendes, Camila Cabello]**

I know what you did last summer (Ah-ah)

Just lied to me, "There's no other" (He-ey)

I know what you did last summer

Tell me where you've been

I know what you did last summer (Ah-ah)

Look me in the eyes, my lover (He-ey)

I know what you did last summer

Tell me where you've been

**[Outro: Both]**

I know, I know, I know, I know

I know, I know, I know (Ah-ah)

(He-ey)

I know, I know, I know, I know

I know, I know, I know (Ah-ah, ah-ah)

I know, I know, I know, I know

I know, I know, I know (Ah-ah)

(He-ey)

I know, I know, I know, I know

I know, I know, I know (Ah-ah, ah-ah)

I know

## Videos

Shawn Mendes ft. Camila Cabello I Know What You Did Last SummerShawn Mendes & Camila Cabello Perform 'I Know What You Did Last Summer'Shawn Mendes & Camila Cabello - I Know What You Did Last Summer Interview Elvis Duran Show
## Trivia

* This is Camila's first single where she is the main artist without Fifth Harmony.
	+ However, Camila still belonged to the group.