Calvin Harris has been spotted leaving Taylor Swift's house the morning after they enjoyed a date together in Los Angeles.

The Scottish dance-pop producer and pop megastar T-Swizzle were seen holding hands at a Haim gig at The Troubador club in West Hollywood, where she was also sitting on his lap - seemingly happy to be photographed by excited fans.

And Harris was later snapped as he left her house the following morning and returned to his own home.

So they must have been having a sleepover, right? Eating marshmallows and watching Dirty Dancing in their PJs probably.

We can't think of any other explanation anyway.