See section above.
Among the FansEdit
LeeKarin is not a popular pairing even among obscure crack pairings. Personality-wise this pairing resembles LeeSaku a lot, and may be supported by people who don't prefer Lee with Sakura or Tenten. Since Karin and Sakura have a lot of similarities in their personalities, it may be possible for Lee to fall in love with Karin after Sakura rejected him.