1.Tell him:"My love!"and किस him(on mouth).
2.You can also tell him:"You are so sweet!See आप later!"and आप will see.
3.You can flirt with him in class like that:look at him dreamy all te time and when he look at आप आप 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 आप 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 प्यार him very much!I will chose first suggestion.