How to get over my crush? please answer and help me?

i luv him and he was sweet to me and mean tu othr gurls and he was just awsum it was like he liked me n he used tu stare at my eyes all the tym i did the same n once when he got to know that i like him he stopd being sweet and i dont know what hpnd he was reely mean to me and now hez mean but he stares at my eyes and smiles evry time he luks at me hez so confusing i wanna get over him i dont want a guy whoz mean to girls he shud respect them he just sux! plese answer please