Why did Judas kiss Jesus?

When Judas “hanged himself” (archive.org/details/bibletellsmeso01wier/page/150) it was similar to a military man falling on his sWord and did not involve a rope around his neck as in western culture. Judas took his own life by falling and suspending himself on a stake and the fact that “all his bowels gushed out” was because his abdomen was punctured by doing this. Judas could have chosen to remain living as one of the 12 apostles but chose not to do so as the mental anguish due to his betrayal of Jesus Christ was to him a negative too great to bear.