The Hum Tum Aur Ghost actor-producer lost his cool when a reporter asked him why he had signed on Dia, a flop actress, for his maiden production venture. Arshad, who was being very cordial until then, started to reprimand and abuse the journalist.
He was about to raise his hand on the reporter but stopped himself on time. However, as he was still angry over it, he left for a smoke break and stormed out of there.
So, maybe Arshad and Dia are more than just co-stars. It certainly looks like it.