Calvin Harris comes for his ex, Taylor Swift on Twitter

This morning TMZ did a report claiming Taylor Swift wrote and recorded Calvin Harris & Rihanna's hit song 'This Is What You Came For'. Taylor's reps later confirmed the report to People magazine and that was when the famous DJ took off his gloves and came for Taylor and her team on Twitter.

In his rants, he confirmed Taylor's hit single 'Bad Blood' was about Katy Perry and said he won't be Taylor's next door mat or allow her make him look bad. See his tweets after the cut...