You're welcome.
Spilled the beans did you?
What was their response when you told them? Did you reassure them that you and their dad are back on track? Even with adult children this circumstance can cause stress or cause them to question their own marriages. A follow-up time to talk is entirely up to you, or it may be best to let the subject come to a rest with no further discussion.
Anytime you give your heart to another - it's adultery. Anytime you share emotional secrets with another - it's adultery. Anytime you fantasize about someone else - it's adultery. Sex never has to enter the picture.
Scripture doesn't sugar coat in Matthew 5:28 (MSG) - But don't think you've preserved your virtue simply by staying out of bed. Your heart can be corrupted by lust even quicker than your body. Those leering looks you think nobody notices—they also corrupt.
Maybe it's time to look at Christian counseling again. Something is obviously broken/missing that both of your hearts are seeking refuge in other relationships outside of your marriage.