Sai and Ino have not kissed.
Episodes 56-71 are filler's,And please,Sai with Sakura or Ino sure dont match,Sai is too socially retarded.
No, she does not. She has expressed liking him, though.
maybe ,maybe not it all depends on what happens in the story
Who knows? He thinks she's ugly, but everything can change :P So far, he has not shown any form of interest in her.