Hi i m a gal i love a boy truely but that guy is only flirtin with me give me some tips to make him love me?

when i asked him will you marry me he said he cant i have slept with him and cannot live without him recently we have come to a comprise that v ll remain friends we both study in the same cl please give me some tips so that i can attrack him and he ll come back to me and love me their after please help me please