I disagree. Most people can distinguish from what is friendly and what is more than friendly. We are to befriend many people, fellowship with many people, regardless of gender. Adultery should not be on your mind or the motive to befriending others in the first place.
I use to believe that men and women could be just friends, until I have had the experience of dealing with extremely vicious girls and women, and the lengths these persons have gone through to destroy and undermine me and my relationship with others.
What does the bible say about trusting people? Should we trust people blindly? Consider the following scriptures
Judge 16 verse 1-22 (Samson and Delilah)
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1] Then went Samson to Gaza, and saw there an harlot, and went in unto her.
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2] And it was told the Gazites, saying, Samson is come hither. And they compassed him in, and laid wait for him all night in the gate of the city, and were quiet all the night, saying, In the morning, when it is day, we shall kill him.
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3] And Samson lay till midnight, and arose at midnight, and took the doors of the gate of the city, and the two posts, and went away with them, bar and all, and put them upon his shoulders, and carried them up to the top of an hill that is before Hebron.
[4] And it came to pass afterward, that he loved a woman in the valley of Sorek, whose name was Delilah.
[5] And the lords of the Philistines came up unto her, and said unto her, Entice him, and see wherein his great strength lieth, and by what means we may prevail against him, that we may bind him to afflict him: and we will give thee every one of us eleven hundred pieces of silver.
[6] And Delilah said to Samson, Tell me, I pray thee, wherein thy great strength lieth, and wherewith thou mightest be bound to afflict thee.
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7] And Samson said unto her, If they bind me with seven green withs that were never dried, then shall I be weak, and be as another man.
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8] Then the lords of the Philistines brought up to her seven green withs which had not been dried, and she bound him with them.
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9] Now there were men lying in wait, abiding with her in the chamber. And she said unto him, The Philistines be upon thee, Samson. And he brake the withs, as a thread of tow is broken when it toucheth the fire. So his strength was not known.
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10] And Delilah said unto Samson, Behold, thou hast mocked me, and told me lies: now tell me, I pray thee, wherewith thou mightest be bound.
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11] And he said unto her, If they bind me fast with new ropes that never were occupied, then shall I be weak, and be as another man.
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12] Delilah therefore took new ropes, and bound him therewith, and said unto him, The Philistines be upon thee, Samson. And there were liers in wait abiding in the chamber. And he brake them from off his arms like a thread.
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13] And Delilah said unto Samson, Hitherto thou hast mocked me, and told me lies: tell me wherewith thou mightest be bound. And he said unto her, If thou weavest the seven locks of my head with the web.
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14] And she fastened it with the pin, and said unto him, The Philistines be upon thee, Samson. And he awaked out of his sleep, and went away with the pin of the beam, and with the web.
[15] And she said unto him, How canst thou say, I love thee, when thine heart is not with me? thou hast mocked me these three times, and hast not told me wherein thy great strength lieth.
[16] And it came to pass, when she pressed him daily with her words, and urged him, so that his soul was vexed unto death;
[17] That he told her all his heart, and said unto her. There hath not come a rasor upon mine head; for I have been a Nazarite unto God from my mother's womb: if I be shaven, then my strength will go from me, and I shall become weak, and be like any other man.
[18] And when Delilah saw that he had told her all his heart, she sent and called for the lords of the Philistines, saying, Come up this once, for he hath shewed me all his heart. Then the lords of the Philistines came up unto her, and brought money in their hand.
[19] And she made him sleep upon her knees; and she called for a man, and she caused him to shave off the seven locks of his head; and she began to afflict him, and his strength went from him.
[20] And she said, The Philistines be upon thee, Samson. And he awoke out of his sleep, and said, I will go out as at other times before, and shake myself. And he wist not that the LORD was departed from him.
[21] But the Philistines took him, and put out his eyes, and brought him down to Gaza, and bound him with fetters of brass; and he did grind in the prison house.
Psalms 146 verse 3
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3]
Put not your trust in princes, nor in the son of man, in whom there is no help.
Proverbs 7 verse 1-27
[1] My son, keep my words, and lay up my commandments with thee.
[2] Keep my commandments, and live; and my law as the apple of thine eye.
[3] Bind them upon thy fingers, write them upon the table of thine heart.
[4] Say unto wisdom, Thou art my sister; and call understanding thy kinswoman:
[5] That they may keep thee from the strange woman, from the stranger which flattereth with her words.
[6] For at the window of my house I looked through my casement,
[7] And beheld among the simple ones, I discerned among the youths, a young man void of understanding,
[8] Passing through the street near her corner; and he went the way to her house,
[9] In the twilight, in the evening, in the black and dark night:
[10] And, behold, there met him a woman with the attire of an harlot, and subtil of heart.
[11] (She is loud and stubborn; her feet abide not in her house:
[12] Now is she without, now in the streets, and lieth in wait at every corner.)
[13] So she caught him, and kissed him, and with an impudent face said unto him,
[14] I have peace offerings with me; this day have I payed my vows.
[15] Therefore came I forth to meet thee, diligently to seek thy face, and I have found thee.
[16] I have decked my bed with coverings of tapestry, with carved works, with fine linen of Egypt.
[17] I have perfumed my bed with myrrh, aloes, and cinnamon.
[18] Come, let us take our fill of love until the morning: let us solace ourselves with loves.
[19] For the goodman is not at home, he is gone a long journey:
[20] He hath taken a bag of money with him, and will come home at the day appointed.
[21] With her much fair speech she caused him to yield, with the flattering of her lips she forced him.
[22] He goeth after her straightway, as an ox goeth to the slaughter, or as a fool to the correction of the stocks;
[23] Till a dart strike through his liver; as a bird hasteth to the snare, and knoweth not that it is for his life.
[24] Hearken unto me now therefore, O ye children, and attend to the words of my mouth.
[25] Let not thine heart decline to her ways, go not astray in her paths.
[26] For she hath cast down many wounded: yea, many strong men have been slain by her.
[27] Her house is the way to hell, going down to the chambers of death.
Matthew 10 verse 16
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Behold, I send you forth as sheep in the midst of wolves: be ye therefore wise as serpents, and harmless as doves.
Wolfs are vicious animals that kill sheep and eat them.
John 2 verse 23-25
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23] Now when he was in Jerusalem at the passover, in the feast day, many believed in his name, when they saw the miracles which he did.
[24] But Jesus did not commit himself unto them, because he knew all men,
[25] And needed not that any should testify of man: for he knew what was in man.
