Vidya, 34 and Siddharth, 38, have reportedly been dating for quite a some time.
Siddharth evaded the marriage question at the DVD launch of Anurag Basu-directed 'Barfi' here, saying, "You all know better than me."
Vidya, who is currently shooting her first comedy "Ghanchakkar" with Emraan Hashmi, has reportedly taken a leave from shoots and will not be working from mid-December.
