If you dream about a boy in your class and you didnt like him but now you sort of do after the dream does it mean you are in love with him?

Asolutely, positively not. All it means is that you had a nice dream about a caracature of a type of boy that you would like if he existed in waking life. This caracature was arbitrarily represented by a random boy from your class. This does NOT mean that the boy in your class has any of those characteristics that you find charming in real life. Too often people make the mistake of believing that their dreams are prophetic. They are symbolic, not prophetic. The symbolism of your dream may merely mean that enjoying the company of the opposite sex has been on your mind lately, and that it is entirely possible, and entirely okay, to have strong feelings for an "average" guy. You don't need to find Prince Charming to have a fufilling relationship.