Our schools and classes are made up of boys and girls. It is very nature for the boys and girls to make friends with each other. And we should make as many friends as possible. We should meet the other sex(性别) in public instead of in secret. And the most important thing is that we should keep a normal and healthy state of mind .If you are a shy person, you can also find a way out. First of all, you can make friends with the students who have the same interest and hobby as you. As both of you have much in common, you may have much to talk about. If you keep doing like that, little by little