Jesus does not have a problem with repentant sinners, only with brazenly unrepentant sinners, such as these two "parents."
Tell me my friend as you look for the perfect stone...... when in your life have you not been a Brazen sinner? Do you hide it that well from others? What would Jesus be writting in the sand about now....?
Scripture is clear that Jesus was accused of hanging out with tax collectors and 'sinners'. Matthew's gospel comes immediately to mind.
One can hang out with someone in the hopes of bringing them the good news and still have a problem with their behavior. I am sure that Jesus was not thrilled that the woman at the well was living with someone who was not her husband, but he still engaged her on a level that she could understand, loving her.