Taylor Swift Performed Calvin Harris' 'This Is What You Came For' At Her Only 2016 Gig

23 October 2016, 14:05 | Updated: 23 October 2016, 14:16

We actually don't know where to begin with this but we are LOVING every single second of it.

When 'This Is What You Came For' dropped all those months ago, we had no idea that Taylor had actually co-written the dance banger with her then boyfriend Calvin Harris. However, once the relationship was over, the deets finally emerged, revealing TS had in fact been involved in the writing.

John Newman Has Not Held Back On Taylor Swift, Labelling Her As "Brutal" To Calvin Harris

So...imagine the thoughts going through Calvin's mind when Swift performed a gorgeous stripped down version of the tune during her 15-song set at the U.S Formula 1 Grand Prix in Austin, Texas.

Have a look at the video below (and yes, you saw Taylor's smirk too right?)...

This Is What You Came For at #F1!! #TaylorSwiftOnUSGP #TaylorSwiftAtF1 #TIWYCF pic.twitter.com/dh9mLXrPLh

— Taylor Swift News (@TSwiftDailyNews) October 23, 2016

THAT WAS PERFECT.

Calvin Harris Just Said What We're ALL Thinking When We're Watching X Factor's Judge's Houses

PIC: Taylor Swift Instagram

Also ,how hilarious was that fan shouting out 'Calvin Who?!', you were thinking it...yeah, but you said it!

You may also like...