Inheriting His Secret Christmas Baby by Heidi Betts is my choice for family relationship. Trevor Jarrod had a one night stand that resulted in the woman having a baby. The baby's mother died two months after giving birth and Bradley was being raised by his aunt Haylie. Once paternity is established Trevor says they will be married. The lady refuses and leaves town. Does he really love her or does he just want to have his son in his life.
This is a great ending to the six books about the Jarrod Dynasty.