Looks like Vin Diesel hates not being the centre of attention on the sets of xXx: The Return of Xander Cage . Just look at this picture of Deepika and Ruby Rose hugging the film's producer Jeff Kirschenbaum and Vin, sulking in the back.
Perhaps his friends forgot to include him in the group photo and we've all been there so we know how that feels.
Cheer up, Vin. This is gonna be you in the movie and that's all that matters.