If Jesus were to lay with a woman, married or not, His sacrifice on the cross would be tainted. He would've no longer been without spot or blemish.
If we are to believe the scriptures then we must believe that He was without sin. If you don't believe that, you're gonna burn. It's as simple as that.
The flesh of the world was born of Satan so Jesus, the name of the flesh isn't his true created existence. It makes no difference what the flesh of man does in this world because it's born a sinner into the world. However, our created existence within the Word of God ( Spirit of God ) is our true righteous existence without ever sinning for eternity.
So Jesus, like all us in the flesh, were born sinners but those of us who have been enlightened in the Spirit of God ( born again ), learn that our created existence in the Word of God will never sin even though the flesh we are temporarily using in this first generation will perish because it's of the world and not of Christ.
1 John 3:
6: No one who abides in him sins; no one who sins has either seen him or known him.
9:
No one born of God commits sin; for God's nature abides in him, and he cannot sin because he is born of God.
Galations 5:
24: And
those who belong to Christ Jesus have crucified the flesh with its passions and desires.
Galatians 5:
19: Now
the works of the flesh are plain:
fornication, impurity, licentiousness,
20:
idolatry, sorcery, enmity, strife, jealousy, anger, selfishness, dissension, party spirit,
21:
envy, drunkenness, carousing, and the like. I warn you, as I warned you before, that
those who do such things shall not inherit the kingdom of God.
Once our flesh has died, then we will wake up on a new earth with new bodies and never understand what sin is.
Jeremiah 31
33: But this is the covenant which I will make with the house of Israel
after those days, says the LORD: I will put my law within them, and I will write it upon their hearts; and I will be their God, and they shall be my people.
34: And
no longer shall each man teach his neighbor and each his brother, saying, `Know the LORD,' for they shall all know me, from the least of them to the greatest, says the LORD; for I will forgive their iniquity, and I will remember their sin no more."