Here's what happened when Machine Gun Kelly and Camila Cabello hit the Radio 1 Live Lounge
stopped by Radio 1's Live Lounge and brought a very special guest with him, the newly solo , to perform their hit Bad Things.
The last time Camila appeared in the Live Lounge she was in very different company indeed, performing as part of girlgroup .
It's a slightly awkward subject to talk about, since she only quit the group in December 2016, but Camila says she has nothing but love for her past.
"Obviously being here is incredible," Camila told Clara Amfo when she asked about Camila's evolution from group member to solo star.
"It was incredible then, it's going to be incredible now."
She added: "It's all love, it's all music."
Camila Cabello does her vocal warm-ups in the toilets
Camila and Machine Gun Kelly tell Clara about their hit, Bad Things.
Clara also revealed she busted Camila in the ladies toilets at Radio 1, where she had sneaked off to do vocal warm ups with her mum. There's no hiding from an R1 presenter.
As well as their current hit, Machine Gun Kelly (or Kels as he asked Clara to call him), and Camila performed a soulful cover of enormous 2016 hit, Say You Won't Let Go.
Excuse us, but we didn't realise Kels could sing as well as he could rap. That boy was on fire.
He also revealed that the song has a special significance for both him and Camila, due to the confessional nature of James's tune.
"We both have some stuff in our hearts that we want to get off," he said.
Here's a clip of their cover and; WOW.
Did we mention MGK and Camila brought a tiny orchestra to the Live Lounge with them?
And it seems like Camila had almost as much fun performing as we did watching.
We'd say 'come back anytime' but something tells us we'll be seeing both Machine Gun Kelly and Camila Cabella in the Radio 1 studios before we know it...