@Gottservant
You are not the first "Christian" who has had sex before marriage. The pre-marital sex was a sign that you had already turned away from God. I know because I have seen the same signs of having turned away from God.
If you will humble yourself and confess your sin of turning away from God, then He will heal your life/land.
Now, concerning your "partner" you can ask God to include her among those Whom He is drawing to Himself. It is just a simple prayer on your part, but it is a prayer that requires much faith on your part. You only need to pray this prayer once, but you can follow this prayer up with Praise and worship on your part that God has heard your prayer and is working towards the outcome of where your partner will be drawn into God's loving embrace and salvation. This Salvation work is God's to perform, although you may be asked to play some part in the drawing of your partner to God.
You may need to pray that God will increase your patience as you wait for your partner's salvation.
When her salvation comes you can then both celebrate together in what God has done in her life.
What you need to do until then is to maintain your relationship with God and to walk in his ways every day as you live out your life for Him
Shalom