What to say to get a girl to like me?

I'm going to give you the best advice I can. Every girl is different, I'm sure you realize that but always keep it in mind. First you need to find out what really catches her interest and see how you could combine that with your interests and see what you both have in common. Try to use any opportunity to have conversation with her, even just to compliment her. Use simple gestures like touching of the arm or winking in a way to let her know that you like her,but keeping it light. Then if you find that things are going well invite her to do something that involves a group not just the two of you. Then if she accepts show her attention throughout the night and be charming. If all goes well at the end of the night say something simple along the lines of how you enjoyed hanging out with her and the two of you should do something again another time.