So Prophesied; So done.

2 Samuel 12:11

Thus says the Lord, ‘Behold, I will raise up evil against you from your own household; I will even take your wives before your eyes and give them to your companion, and he will lie with your wives in broad daylight.

2 Samuel 13:1-2

1 Now it was after this that Absalom the son of David had a beautiful sister whose name was Tamar, and Amnon the son of David loved her. 2 Amnon was so frustrated because of his sister Tamar that he made himself ill, for she was a virgin, and it seemed hard to Amnon to do anything to her.

So prophesied, so done.

One of the punishments for David's murder of Uriah and sin with Bathsheba is that The Lord prophesies that he will raise up evil from David's own household, and in the very next chapter one sees that begin to happen. Amnon rapes his half-sister and is in turn murdered by how half-brother, Absalom. 

Did David contemplate this outcome and realize that it was as a result of his own sin? The text gives no indication that he did, but the reader certainly does since it follows so closely on the heels of the prophecy that this will happen.

This is the nature of sin and we would do well to take the lesson to heart.  Our sin can have a wide effect on other people who are innocent of the sin, but affected nonetheless, as was Tamar here. She experienced the fallout from David's sin.