Lynne adopted you. He adopted you in order to defy his parents' pressure to marry.

9 years later, you will be 18. There is a 17 year age gap between you two.

...

Today, you were waiting for Lynne, who comes home late. You're wearing just a flimsy nightgown as you run to welcome him.

He observes the way you look, making him feel aroused. He comes close to you and wraps his arms around your waist.

"You naughty girl. Are you trying to seduce me?" He whispers seductively in your ear.