Find her after class and chat her up. Pick something weird about the class so that the conversation starts up interesting. Then, just talk to her and be friendly. Don't force anything, don't push to ask her out or anything. At the end, say this "Hey, I think we get along pretty great. Some common interests and whatnot, but I think it would be a shame if we left it as is. So, how about I get your number and I'll shoot you a text later on". Don't ask, assume she'll already give it to you in the way you say it. Then, it's all you Read more