Vayehav Yitzchok ess Eisav .... v'Rivkah oheves ess Yaakov.
Rivkah was not as great as Yitzchok. She was not able to love Eisav. Therefore, she only loved Yaakov.
Yitzchok loved Eisav! [He also loved Yaakov, but that is not a chiddush!]
What?! Why would Yitzchok love a Rasha like Eisav??
How can this question even be asked?
Eisav is Yitzchok's only son!! A Father loves his son NO MATTER WHAT!!!
As Harvey says,
"God loves you!!! ... and there is nothing you can do about it! If God was able to love the Jewish People after they sinned with the golden calf at the foot of Mount Sinai - the ultimate betrayal - do you think that God has a hard time loving you because you acted out?"
Yitzchok knew that Eisav was a rasha, but he loved Eisav anyway!
Hashem knows that we acted out, but Hashems loves us ANYWAY!!!