He will slander her and you if you give him the chance.A Godly husband protects his wife; a Godly man protects his sister. If it is a man and they have read the Word they usually quote 1st Corinthians emphasizing the "seek not a wife" part with a pained look on there face.
But if anyone does not possess the [Holy] Spirit of Christ, he is none of His [he does not belong to Christ, is not truly a child of God]. If you are truly His son or His daughter you lay down your life and your desires and accept His will and His desires. God has a plan for you that He started before the world began and it will go on for eternity.
Ephesians 4:4-5 4 Even as [in His love] He chose us [actually picked us out for Himself as His own] in Christ before the foundation of the world, that we should be holy (consecrated and set apart for Him) and blameless in His sight, even above reproach, before Him in love.
But for you men the Word is clear that you treat women with respect and as sisters. You don't decide you like her and drive off to Lookout Point even if she wants to. You don't want the girl that is willing to break her vow before God and you are doing the same.
In fact, if you really love and respect her, you would never put her in a place where there could be even a hint of sexual immorality. He does not care that nothing has happened between you and her.
This does not mean you won't have feelings for each other but true love is not feelings alone. We as Christians are commanded to be led by the Holy Spirit, not by how we feel.