A Sinful Woman
This encounter is remarkable on a number of counts. First, Jesus entertains the -- rather intimate! -- attentions of a sinful woman without discomfort -- and without concern for the apparent discomfort of his host. Second, his forgiveness of her sins causes considerable speculation among the guests (as it did in this encounter  -- the whole idea seems to occur to Jesus long before it occurs to anyone else). Finally, the connection that Jesus makes between forgiveness and love has enormous implications...

In the story of the two debtors that he tells his host, the forgiveness seems to be the cause of the resulting love. And like Simon, we "suppose the one who had the bigger debt forgiven" will "love him more" -- it makes sense, after all. Except that Jesus then reverses the logic when he applies it to the woman: instead of the forgiveness appearing to cause the love, the love now appears to cause the forgiveness: "her sins, which are many, are forgiven -- for she loved much."

Jesus elevates love to a " prime directive " -- it represents both his summary of the law and the new principle that he gives to his disciples.

Luke 7:36 (ESV) One of the Pharisees asked him to eat with him, and he went into the Pharisee's house and reclined at table. 37 And behold, a woman of the city, who was a sinner, when she learned that he was reclining at table in the Pharisee's house, brought an alabaster flask of ointment, 38 and standing behind him at his feet, weeping, she began to wet his feet with her tears and wiped them with the hair of her head and kissed his feet and anointed them with the ointment. 39 Now when the Pharisee who had invited him saw this, he said to himself, “If this man were a prophet, he would have known who and what sort of woman this is who is touching him, for she is a sinner.” 
40 And Jesus answering said to him, “Simon, I have something to say to you.” And he answered, “Say it, Teacher.” 41 “A certain moneylender had two debtors. One owed five hundred denarii, and the other fifty. 42 When they could not pay, he cancelled the debt of both. Now which of them will love him more?” 43 Simon answered, “The one, I suppose, for whom he cancelled the larger debt.” And he said to him, “You have judged rightly.”
44 Then turning toward the woman he said to Simon, “Do you see this woman? I entered your house; you gave me no water for my feet, but she has wet my feet with her tears and wiped them with her hair. 45 You gave me no kiss, but from the time I came in she has not ceased to kiss my feet. 46 You did not anoint my head with oil, but she has anointed my feet with ointment. 47 Therefore I tell you, her sins, which are many, are forgiven—for she loved much. But he who is forgiven little, loves little.” 
48 And he said to her, “Your sins are forgiven.” 49 Then those who were at table with him began to say among themselves, “Who is this, who even forgives sins?” 50 And he said to the woman, “Your faith has saved you; go in peace.”