Update again - now correct
Update - these are incorrect, I'll do them manually later (at work just now!)

On request here are some test cases:

 Catherine Zeta Jones LOVES Michael Douglas    = 29% friends
           Posh Spice LOVES David Beckham      = 93% marriage material
     Melanie Griffith LOVES Antonio Banderas   = 24% friends
       Britney Spears LOVES Justin Timberlake  = 17% friends
              Madonna LOVES Guy Ritchie        = 44% marriage material
Sarah Michelle Gellar LOVES Freddie Prinze Jr. = 63% friends
      Monica Lewinsky LOVES Bill Clinton       = 27% arguers
[download]

Have fun

   larryk                                          
perl -le "s,,reverse killer,e,y,rifle,lycra,,print"