The 31-year-old former Miss India co-owns a production house Born Free Entertainment along with Sahil and actor Zayed Khan. Their first film, "Love Breakups Zindagi", made under the banner and directed by Sahil, was released in 2011.
Dia says she is now ready to take the plunge with her longtime boyfriend.
"I will get married next year. Sahil is a good human being," said Dia, who attended an oversees award function with Sahil recently.
The actress sizzled on stage as she danced on hit Bollywood wedding songs like 'Mehendi laga ke Rakhna' from "Dilwale Dulhania Le Jayenge", 'Tenu Le ke Main Javanga' from "Salam E Ishq" and kept the crowd entertained throughout her performance.