Probably one of the reasons why gushing is so unattractive is that it leaves nothing for the listener to do.
Margery WilsonSpeaking of opinions, the charming woman does not air hers very freely. The crude woman is eager to let you know what she thinks of every matter, person or object that bobs up. She comments on every passing item - even in public, as you may have noticed. Not only is it bad taste for her to be so desperately interested in her own reactions and opinions - but she throws away the precious aura of reserve and mystery that makes a woman attractive.
Margery Wilson