Two Birds Rejoicing

Childhood Sweethearts! Modern! Secret Love!

Is there any modern childhood sweethearts novel that is evenly matched (no campus novels required) where the male protagonist is from the father's side, the female protagonist is the little sun, the female protagonist's parents are in the military and politics, the female protagonist is engaged in scientific research, the male protagonist's family has been in business for generations, the male and female protagonist's families are family friends, and they grew up together.