While she has always maintained that he's simply a "good friend", there's more than meets the eye.
Notes a source, "The two appear to be extremely comfortable in each other's company. She might have found love again. Considering she has had her share of heartbreaks, she wants everything to go just right.
She wanted to be extremely guarded about the guy and proceed with utmost caution. "
The couple was spotted arriving together at Shilpa Shetty's Diwali party and earlier, were snapped together at a late night screening of a film.
Buzz about their relationship heightened when Dia made public her decision to turn producer with Sahil directing his first film under her banner.
Dia has teamed up with buddy Zayed Khan to float a production house as reported ('Two-che'; HiTLIST, June 30).
Buzz is that Sahil met Dia met through their moms who know each other well.
But Dia continues to maintain that Sahil is just a friend. She says, "There is nothing like that. I am the producer, he is my director!"
In the past, Dia Mirza has been linked to Bunty Sachdeva (she admitted to seeing him). B-Town rumours also linked her with Apoorva Lakhia, Sanjay Gupta, Kunal Kapoor, Sameer Hafeez and Arshad Warsi.