My Husband Doesnt Know

Its been 2 days and my husband still doesn’t know I saw him. On his knees sucking our neighbors cock and I can’t stop thinking about it. It turns me on so much when I think about it, seeing him with his big white cock in my husband’s mouth.
The hottest part was when our neighbor went to prove his dominance over my husband. Not only did he literally face fuck my husband as he came. After he began wiping and slapping my husband’s face and lips with his cock. He then zipped up and I quietly slipped away, at first shocked and surprised. Later on I became truly aroused by the sight and thought of my husband sucking cock.
Im still Leary of letting him know that I know. What should I do?