I ejaculated while my wife was away, tempted by my son. Hinata Hikari BF-682

My wife and I are both remarried. I have no children, but my wife has a stepdaughter named "Riying". Three years have passed, and I thought Riying had come to respect and admire me as a real father, but... it turns out that Riying has romantic feelings for me... When my wife was away on a business trip, I was seduced by Riying and crossed that line...