May one not come to forgive without positively coming to love the offender? Yes, when the offender was a stranger to begin with. But a friend is thoroughly forgiven only by being re-admitted to friendship. At the same time we do well to recall St Thomas's prefatory remark (B. I, Chap. IX): -- "For declaring truths that we believe on the revelation of God, there are certain probable arguments ready to hand, which may be advanced for the exercise and consolation of believers, but not for the confutation of opponents."
Of God and His Creatures: 3.158