Massa to me has always been a dirty racer. I seem to remember him being really agresive against Alonso at some race in 2007
Nurburgring, Alonso went round the outside of turn 5 ( I think) and massa took a chunk out of his side pod. Led to a very funny argument before try went into the podium!!
Massa always feels the need to confront a driver he has had contact with, whether its his fault or not (usually not as is the way with most drivers!)