I think God wants us to love the sinner and let Him deal with the sin.
Just like adultery...
If I know someone who is cheating on their spouse, do I stop being their friend because I think what they are doing is wrong? Or do I simply stay put in their life because maybe my influence will help them come to the realization themselves? Confront with Love doesn't mean condemn with kindness. Jesus deals with our hearts individually. And last time I checked, He didn't need my help in anyway... Jesus can surpass all of our understanding in how He deals with people. It's been made clear that my job is to just love someone with all my heart, soul, and mind because I am called to love others the way the Father loves me; in the midst of my sin with compassion. "While we were still sinners He called us..."
Don't be the judge and jury, let God be God...He doesn't need our help.