Any place in or near Chennai, India to spend a romantic time with my girlfriend?

I am new to Chennai. I've started dating a girl here. She asked me to take her somewhere in the weekend to have a romantic dating. Where shall I take her? Suggest me some nice places near Chennai except Pondy, Mahablipuram, MGM, VGP, Muthukad. If I start love-making in a car/theatre/park here, will cops bother? Plz excuse if the ques is bad