Let us examine the Greek word "pais" and see what its definition actually is:
According to a Lexicon found at http://www.blueletterBible.org this is the definition of "pais":
1) a child, boy or girl
a) infants, children
2) servant, slave
a) an attendant, servant, spec. a king's attendant, minister
According to Thayer's Greek Bible Dictionary, the definition of "pais" is:
1: a child, boy or girl. Plural: infants; children
Now, let us examine several of the different Verses in the Bible where that same Greek word ("pais") is used:
Matthew 2:16: Then Herod, when he saw that he was mocked of the wise men, was exceeding wroth, and sent forth, and slew all the children ["pais"] that were in Bethlehem, and in all the coasts thereof, from two years old and under, according to the time which he had diligently enquired of the wise men.
Were all of those "children" that were murdered being kept for sexual purposes? Did Herod only order that children who were kept for sexual purposes be destroyed?
No, that would be insane.
Matthew 12:18: Behold my servant ["pais"], whom I have chosen; my beloved, in whom my soul is well pleased: I will put my spirit upon him, and he shall shew judgment to the Gentiles.
Jesus was "The Pais" of God The Father. Are you claiming that this is a sexual relationship?
Matthew 21:15: And when the chief priests and scribes saw the wonderful things that he did, and the children ["pais"] crying in the temple, and saying, Hosanna to the Son of David; they were sore displeased,
Were all of those children in the temple kept for sexual purposes?
Luke 1:54: He hath holpen his servant ["pais"] Israel, in remembrance of [his] mercy;
Israel was God's "pais". Are you claiming that God had a sexual relationship with Israel? I hope not.
Luke 1:69: And hath raised up an horn of salvation for us in the house of his servant ["pais"] David;
David was God's "pais". Are you claiming that God had a sexual relationship with David? I hope not.
Luke 2:43: And when they had fulfilled the days, as they returned, the child ["pais"] Jesus tarried behind in Jerusalem; and Joseph and his mother knew not [of it].
Luke 2:43 describes Jesus as a "pais" of Joseph and Mary.
Acts 3:13: The God of Abraham, and of Isaac, and of Jacob, the God of our fathers, hath glorified his Son ["pais"] Jesus; whom ye delivered up, and denied him in the presence of Pilate, when he was determined to let [him] go.
Once again, Jesus is called "The Pais" of God The Father, and also in Acts 3:26, 4:25, 4:27, and 4:30.
So, as is extremely obvious, the Greek word "Pais" is used in the Bible for children (boys or girls) plain and simple.
There is absolutely nothing sexual implied AT ALL in the Bible in connection with this word.