Beautiful Shela Hakodosh as to why it says that Yitzchok loved Esav in past tense whereas it says Rivkah loves Yaakov in present tense

Beautiful Shela Hakodosh as to why it says that Yitzchok loved Esav in past tense whereas it says Rivkah loves Yaakov in present tense

ParshaEli SilbersteinToldos