“Can I buy you a drink?”
Every girl has been approached by a guy wanting to buy her a drink. Don’t be that guy. All this does is tell her, “I am really uninteresting and have to buy time with you.” If you’re going to offer to buy her a drink, do it once the conversation is already rolling. Be confident that you don’t need to buy her anything in order to make her interested in you. The drink will be an added incentive.