13:23 [After Jesus had stated that one of the disciples would betray him] The disciple Jesus loved was reclining next to Jesus; Simon Peter signed to him and said, 'Ask who it is he means', so leaning back close to Jesus' chest he said, 'Who is it, Lord?'.
19:26 [Jesus on the cross] Seeing his mother and the disciple whom he loved standing near her, Jesus said to his mother, 'Woman, this is your son.' Then to the disciple he said, 'This is your mother.' And from that hour the disciple took her into his home.
20:2-9 [After seeing the empty tomb Mary of Magdala] ...came running to Simon Peter and the other disciple, the one whom Jesus loved.
21:20-24 [The resurrected Jesus appears on the shores of lake Tiberias and he discusses Peter's death] Peter turned and saw the disciple whom Jesus loved following them - the one who had leant back close to his chest at the supper and had said to him, 'Lord, who is it that will betray you?' Seeing him, Peter said to Jesus, 'What about him, Lord?' Jesus answered, 'If I wanted him to stay behind till I come, what does it matter to you? You are to follow me.' The rumor then went out among the brothers that this disciple would not die. Yet Jesus had not said to Peter, 'He will not die,' but, 'If I want him to stay behind till I come.'
Presumably he was a red-blooded heterosexual male who controlled or
directed his sexual drives in an appropriate, albeit unrecorded manner.