Reno Omokri has advised men to forgive and move on if DNA proves they are not the father of their child, because there is no illegitimate child but there is illegitimate parents.
If DNA proves you are not the father of your child, think before reacting. If you can forgive, forgive. Let it be a tight secret. Tell no one. Not even the child. There are illegitimate parents, but never illegitimate children!