I've had my share of forgiving people and being forgiven. There are pending closures but the act of dealing with a person is not denied or withheld. It's just secured in time. This is because it is a human frailty -- not to be able to forgive in all its full meaning. I've learned that only by being forgiven by God through Jesus Christ can I always have a chance to react to those who wrong me intentionally or unintentionally. There is always that chance to react in a forgiving way. I just have to always look to the cross where Jesus died and the tomb where he triumphed for me to forgive another person.
John 13: 14-15
If I, your Lord and Teacher, have washed your feet, you also should wash each other's feet. I did this as an example so that you should do as I have done for you.