(“Liar”) was about a person that I didn’t wanna have feelings for and I just didn’t wanna face my feelings. I didn’t wanna like him, because I was scared. “Liar” is almost like making fun of that, making fun of myself. Calling yourself out. It’s like you see an ex or whatever at a party and you’re like, “I don’t like him anymore, I don’t like him anymore.” And then he says hi to you and you’re like, “Shit, I like him!”

– Camila Cabello, via Billboard

They were written in the same day. We did the idea for “Liar” and then I was like, I have like 30 minutes left and I really wanted to make another song, make another idea. I basically had the chorus melody for “Shameless” […] They’re both about the same situation… I was denying feelings for this person for a long time. And before I would see him, I’d be like, “I don’t like him, I don’t like him. What, I don’t like him” And then I would be like “I like him.”

– Camila Cabello, via an Instagram livestream

In an interview with Billboard, Camila spoke on the music video:

That was my favorite music video I’ve done, for sure.

She later posted to social media, saying:

Whenever I make a music video I try to think of what message I want to tell, I think what do I wanna communicate to someone who’s watching 🧐🧐 The video is pretty crazy and ridiculous and a story we had fun making up, but the messages are what make me most proud of it- I told Dave I wanted one of the themes in the video to be true love over materialism- I feel like nowadays people value money, power, luxury, and even the “appearance” of how something looks more than looking at the real thing – the talk show is making fun of that by showing how people take a human situation and take the humans out of it by just focusing on the superficial, you know? the other message I love in it is about living your truth. The first time I try to lie, life immediately punishes me by making me choke to death, then I try to avoid it by telling little truths, but not the actual BIG truth,which is that I’m unhappy with this luxurious, grandiose, seemingly perfect fiancé – so every time I try to ignore it the messages become louder and louder, so I relive the same day and die every time I don’t say the real truth. When I finally admit to my fiancé that I’m in love with the bus boy at my restaurant, the groundhogs loop is broken and I finally am not reliving the same day!!! Moral of the story: live your truth and choose LOVE over all the other BS that doesn’t really matter. I LOVE YOU GUYS I HOPE YOU LOVED THIS VIDEO!!