To what extent do actions change intentions?

Are actions have a big affect on what we intend to do. If we have negative feelings of someone or we use negative actions on them than our intentions towards them will probably also be very bad and negative. For instance in Edgar Allen Poe's "The Cast of Amontillado" Montresor wants revenge on Fortunato so he locks him up to die in the catacombs underground because of something unknown that Fortunato did to Montresor. If Fortunato didn't act in the way he did maybe he wouldn't be dead in the catacombs because of Montresor. Because Fortunato acted that way it somehow offended Montresor in a negative way. So Montresor's intentions we also negative towards Fortunato. So I think that actions have a very big part of what we intend to do. No matter what the situation our actions mean a lot.