Today is Spy Wednesday, because Judas was spying out an opportunity to betray Jesus, as he would do with a kiss.
I often wonder whether Judas thought Jesus would escape as he had before, no harm would have been done, and Judas would have been thirty silver pieces richer. When Judas realized that his plan was not working out and that he had inadvertently betrayed Jesus to his death, he was overcome with horror and killed himself. Perhaps.
I often contrast Judas response to the horror of his actions with that of Peter. In many ways they are alike in their betrayal. One turned back toward God and forgivness and one turned back on himself.