Sir. This is not right. And this is especially wrong because you are being let into your church while you are using the church as a venue of sin. This woman is not your wife and you are not even engaged or in a courtship (and even in the latter two instances you'd still really be pushing it). This is called defrauding- you are arousing feelings which you have no probable nor solid reason to believe will ever lawfully be able to be fulfilled. This is also lascivious- you are stirring up forbidden lust in each other by what you are doing. You still need to embrace death with Christ and crucify your flesh that you might live unto God. And you ought to be honest and tell your church leadership what you are doing, renounce it and apologize for it before them; and likewise before the woman (and before her parents too if they are at the church). Otherwise you will enter the church a hypocrite. Please reconsider your course lest you normalize the reconciliation of carnality and sin with Christianity, and thus become so blind and hardened to true Christian godliness that it becomes extremely unlikely that you will ever turn around and get on the narrow road of submission to Christ that leads to heaven.
1 Thessalonians 4:2-8: "2 For ye know what commandments we gave you by the Lord Jesus.
3 For this is the will of God, even your sanctification, that ye should abstain from fornication:
4 That every one of you should know how to possess his vessel in sanctification and honour;
5 Not in the lust of concupiscence, even as the Gentiles which know not God: 6 That no man go beyond and defraud his brother in any matter: because that the Lord is the avenger of all such, as we also have forewarned you and testified. 7 For God hath not called us unto uncleanness, but unto holiness. 8 He therefore that despiseth, despiseth not man, but God, who hath also given unto us his holy Spirit."
Ephesians 4:17-24: "17 This I say therefore, and testify in the Lord, that ye henceforth walk not as other Gentiles walk, in the vanity of their mind, 18 Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their heart: 19 Who being past feeling have given themselves over unto lasciviousness, to work all uncleanness with greediness. 20 But ye have not so learned Christ; 21 If so be that ye have heard him, and have been taught by him, as the truth is in Jesus: 22 That ye put off concerning the former conversation the old man, which is corrupt according to the deceitful lusts; 23 And be renewed in the spirit of your mind; 24 And that ye put on the new man, which after God is created in righteousness and true holiness."