I am a sophomore in high school. There is a girl in my german class who I am interested in. We have talked a little bit, and she finds some things that I say funny. Most converations start with a certain event happening that we both find humor in. We have discussed movies and TV shows sporadically, and even some politics. These are usually quite short conversations, because they are only in class. I really want to talk to her more, and am wondering how to start converations. What should I say when she walks in? She sits right behind me. I think that things like "how is your day going" are really corny, and neither of us are into small talk very much. I am currently browsing this online dating site but i would like to know if there are any other good sites that can help me sort my problems.

Maybe just giver her a few hints you're interested like saying she looks pretty, you like her smile, etc.