Genesis 29:30-33 Jacob slept with Rachel as well, and indeed, he loved Rachel more than Leah. So he worked for Laban another seven years.

MSB⁽ⁱ⁾ ³⁰ Jacob slept with Rachel as well, and indeed, he loved Rachel more than Leah. So he worked for Laban another seven years. ³¹ When the LORD saw that Leah was unloved, He opened her womb; but Rachel was barren. ³² And Leah conceived and gave birth to a son, and she named him Reuben, for she said, “The LORD has seen my affliction. Surely my husband will love me now.” ³³ Again she conceived and gave birth to a son, and she said, “Because the LORD has heard that I am unloved, He has given me this son as well.” So she named him Simeon.