26 And when his slaves told David these words, it pleased David well to be the king’s son-in-law, and the days were not expired.
1 Samuel 18:26 Cross References - EJ2000
1 Samuel 18:21
21 And Saul said, I will give her to him that she may be a snare to him and that the hand of the Philistines may be against him. Therefore, Saul said to David, Thou shalt this day be my son-in-law with the other one.