Granddaddy Likes to Watch

I get home from studying abroad to find out the man of the house is getting remarried, which means I'm getting a new older man of the house. I meet him for the first time the day before the wedding. He's handsome for his age, a silver fox with eyes that are constantly watching me.
When the man of the house and his new wife leave me alone with the much older man of the house for the weekend, something unexpected happens. Unexpected, but amazing.
Can something this good be wrong?