what do tom and george discuss at the gas station

They stop for gas at Wilson's garage. Wilson tells Tom that he's decided to move his wife out west, since he recently learned that she's been having an affair; he does not yet, however, know who her lover is. Upon leaving the garage, they see Myrtle peering down at the car from her window. She stares at Jordan with an expression of jealous terror, since she assumes that Jordan is Tom's wife.