BREAKING NEWS: Problems For Tayvin Already?

Calvin Harris crashed at Taylor Swift's pad recently, and he may have burned while he was there.

Calvin is allergic to her cats, whose names are Olivia Benson and Meredith Grey.

The worst part? The cats travel with Taylor everywhere.

A friend of the couple said, “Calvin was up all night blowing his nose and complaining he couldn't breathe. I think it's caused a bit of tension. Now Calvin only wants to meet up in hotel rooms or at his place in Los Angeles -- but never again at Taylor’s house.”

Uh oh.