This is silly
Because no one should fallin love with my smile, they should be in love with me, not the expression on my face. It is objectification, a debasement of my entire self. If they cannot fall in love with me as a whole instead of just my stupid, sloppy grin, I don't want them in my life anyway. They should love my frowns and my smiles and everything else about me.
Falling in love with a smile is like falling in love with a porn star through his/her picture in Hustler.