Bollywood on-screen character Dia Mirza has used the microblogging website page Twitter to certify the news of her engagement to business accomplice and long-term playmate Sahil Sangha.the 32-year-old past beautiful woman, who was presumed to be seen on-screen character Kunal Kapoor years back, seems to have made her affiliation with Sangha official in New York City as she hash-marked the city's name in her tweet.