Actually,
He called him the "son of perdition".
That's not clean.
And there was no "chance" for his redemption.
He was a vessel of destruction,
ordained as the betrayer.
Jesus Himself said,
"Did I not choose you the twelve,
but one of you is a devil?" John 6
He was not overcome by guilt.
He was overcome by regret.
Those are entirely two different things.
The first one describes someone submitting to God in sorrow;
the second regretting he made a wrong move,
and wishing to have done it differently so he could keep up his charade as the thief.
The first type repents,
turning from his sins,
leaving himself to the mercy of God,
which is godly sorrow;
the second has deadly sorrow,
which is why to the bitter end,
Judas defied God by killing himself,
believing he had control over his own destiny.
He did mean Judas.
In praying for the Apostles,
Jesus said this:
12 While I was with them in the world,
I kept them in Your name.
Those whom You gave Me I have kept;
and none of them is lost except the son of perdition,
that the Scripture might be fulfilled. John 17
This is the same individual He called "a devil" among the Twelve (John 6).
You misapplied the subject about love.
Jesus loved His own before they loved Him.
The whole point is that even His own were once His enemies,
and His love reforms them inwardly,
from having a mind at enmity against God,
to one of the mind of Christ.
As to the one who has the sin unto death,
the Apostle John said,
"There is sin leading to death.
I do not say that he should pray about that." 1 John 5
That's not "love".
The Scriptures itself teaches about deadly sorrow:
"10 For godly sorrow produces repentance leading to salvation,
not to be regretted;
but the sorrow of the world produces death." 2 Cor. 7
That Judas killed himself,
showed he regretted.
Godly sorrow is never to be regretted.