Don't Expect a Tayvin Collaboration Anytime Soon

- Allegedly, Calvin's team suggested that he collaborate with girlfriend Taylor Swift, but the DJ thinks it's not a good idea.
- Supposedly proves how serious he is about Taylor as he doesn’t want to mix business with pleasure and rock the boat.
-  Learned his lesson from Rita Ora breakup where Calvin blocked Rita from releasing the tracks they had worked on together.
- Planning to collaborate with Beyonce instead.

What's the pettiest thing you've done to an ex after a break-up?