1.Tell him:"My love!"and キッス him(on mouth).
2.You can also tell him:"You are so sweet!See あなた later!"and あなた will see.
3.You can flirt with him in class like that:look at him dreamy all te time and when he look at あなた あなた just smile.
4.You can just talk with him like that:Hi,Draco!How are you!How's in the school?
5.Never call him Malfoy he will think you're insulting him.
6.If あなた are "mudblood"that he will say tell him that:"Thanks sweetheart but i think brown hair is better for me!
7.Be really pretty,look at him secretly full of charm and love.Just walk over him with smile.
Thats it!I do 愛 him very much!I will chose first suggestion.