Laban, Jacob's uncle had 2 daughters, Leah and Rachel.
When Jacob saw Rachel,
he immediately fell in love for Rachel.
Laban asked Jacob to work 7 years for him
in exchange for Rachel.
After 7 years of work
Laban tricked Jacob into marrying Rachel's sister Leah.
Jacob was offered to work 7 more years
to marry Rachel.
Jacob fulfilled another 7 years of work
and married Rachel.
Leah was hurt by
Jacob's undivided love for Rachel.