a Bit of a Paradox, that.
Jesus knew his fate, he knew Judas' role in that fate... a Case could be made Judas 'playing his part' made him a better friend than Peter who not only thrice Denied Christ to cover his own ass at the Crucifixion, but when Jesus told him he'd do so, he denied that too.
Silver aside, how does one come to terms with betraying some one, who knows before you do, that you'd do it, and like a Lamb to the Butcher they let it happen... is it any wonder Judas 'Stretched his Neck' after the fact