Genesis 29:29-31 New International Version - UK (NIVUK)
29 Laban gave his servant Bilhah to his daughter Rachel as her attendant. 30 Jacob made love to Rachel also, and his love for Rachel was greater than his love for Leah. And he worked for Laban another seven years.
31 When the Lord saw that Leah was not loved, he enabled her to conceive, but Rachel remained childless.