1) Must we forgive our "debtors" if they do not request, or in any way indicate to us that they desire our forgiveness?
2) Does Jesus forgive us even if we don't explicitly ask to be forgiven? If yes, could you site relevant scripture. Also, if the answer is yes, why do are we required to go to confession?
First, it is very hard to forgive someone who does not admit that they have done wrong. If I do not admit my wrong, then I will not receive your willingness to forgive. However, that does not mean that we have to hold the wrong of another in our hearts. We can go on with our lives in such a way that we will not let what has happened in the past effect our future. That is, we have to be willing to forgive, even if the other does not want to receive it.
Second, Jesus is always willing to forgive, however the same principle is in effect. If we do not want the forgiveness that God offers, then we are not forgiven.... however, God's forgiveness is always there, waiting for us to accept it. God does not force Himself upon us. He has given us the free will to accept or reject His love, mercy, and compassion.