Churches need to reflect God's grace, rather than judgmentalism. Don't dwell on their homosexuality. If you are involved in an accountability relationship, it must involve complete trust and total confidentiality. Shock is followed by other powerful emotions, including anger, guilt, disbelief, denial, shame, depression or resentment. Some parents may even feel relief that it is now out in the open.
Feelings are just feelings.
In themselves they are neither right nor wrong, they just are. Your feelings need to be acknowledged and owned, not denied and repressed. Remember the feelings you are experiencing are healthy and are actually part of the healing process. Mothers have different reactions to fathers about the homosexuality of their child. Loving your child is just loving your child.