The one Jesus loved
This disciple has been identified as John the Apostle, whose Feast we celebrate today.
As I mentioned in a similar post last year, the repetition of the phrase "the one whom Jesus loved" in this very literary Gospel indicates a deeper meaning than just describing a relationship between two historical people.
Indeed, each of us by our baptism are to be disciples "whom Jesus loves."
And so, the Gospel writer is in some sense placing us in the middle of these great events that he recounts.
You are there.
You are the one whom Jesus loves.
Live that way.