It's Katrina Kaif and Ali Zafar. Ali and Kat are said to be going saath-saath or khaana-peena on quite a few occasions.
Oh waise Kat seems to be still holding a torch for her ex Salman. When Ali mentioned to her that he is intimidated by Khan, Kat jaldi se jumped to his defence.
She said that whatever his exterior is, he is actually a sweetheart! Aww. Mera toh dil hi melt ho gaya.