Scriptures I list are form following article: http://www.christianwomentoday.com/advice/datingchr.html
Do not be unequally yoked
2 Corinthians 6:14-1614 Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? 15 And what concord hath Christ with Belial? or what part hath he that believeth with an infidel? 16 And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people.
Keep yourself pure
1 Timothy 5:22Lay hands suddenly on no man, neither be partaker of other men's sins: keep thyself pure.
Because your body is the temple of the Holy Ghost
1 Corinthians 6:18-2018 Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body. 19 What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own? 20 For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God's.
Trust in the Lord
Proverbs 3:5-65 Trust in the LORD with all thine heart; and lean not unto thine own understanding. 6 In all thy ways acknowledge him, and he shall direct thy paths.
Do not be unequally yoked
2 Corinthians 6:14-1614 Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? 15 And what concord hath Christ with Belial? or what part hath he that believeth with an infidel? 16 And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people.
Keep yourself pure
1 Timothy 5:22Lay hands suddenly on no man, neither be partaker of other men's sins: keep thyself pure.
Because your body is the temple of the Holy Ghost
1 Corinthians 6:18-2018 Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body. 19 What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own? 20 For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God's.
Trust in the Lord
Proverbs 3:5-65 Trust in the LORD with all thine heart; and lean not unto thine own understanding. 6 In all thy ways acknowledge him, and he shall direct thy paths.