dont know if she is still his GF . but on googling found a news clipping of November 16, 2007- Mid-day -article titled "Drunk Ronit Roy flirts with Dimple Kapadia".
15 Nov 2007 ... Balaji stable Suvarna Jha, Natasha Hasanandani, Karan Patel, Amita Chandekar, Akashdeep Saigal with his girlfriend Shazaan Padam-see. ...
Unfortunately, since I am a newbie cant paste a link to the article.