Fake Marrying Her Dad's Best Friend

The single dad next door needs a nanny.

When my neighbor's nanny quits, I step in to watch Danny. When I move in, my secret crush on Jeff blossoms. I've had a crush on my dad's Army buddy a long time.
And one night, I find myself in his bed. I give him my v-card.
And then I'm wearing his grandmother's ring on my finger to save his company.
Once I'm pregnant, our marriage seems a little too real.
***No cheating, guaranteed HEA***