Women are suckers for romance. Need a proof? You do hundred things for them, call them up every now and then, take them out for dinners and holidays, gift them the best of things and at the end of it all, they will look into your eyes and ask, "Do you really love me?" So, the conclusion? You need to say it time and again that they are special to you and that how much you love them. A romantic way of doing this is to write a love song for them and sing it when you two are alone.