I will second Steve in terms of the nightlife. But AS had commented this on my sitch a buncha times and it's very true - nothing wrong in a bit of flirtation and chatting up with women. It will boost your confidence and self-esteem.
So, enjoy the nightlife. Enjoy some flirtation and attention. But, I am not of the camp that says you should immediately go out there and sleep with as many people as you want. You're in no place to offer anybody anything and you have a lot to work on right now about yourself. Don't add another layer of complication.