I'm a regular poster but I've changed my name, not to protect me, but to protect the identities of the people I'm talking about, as I think a few people here know me (and possibly them) in RL.
Coming home from the pub last night, I saw someone I know in a sweaty clinch. She's married and so is the man she was with. I don't know him, but I do know his wife, who happens to be the best friend of the woman he was snogging. I also know her husband and some of his family members are good friends of mine. Me and a few friends have wondered for a while whether she was having an affair with this man, but she had denied it and no-one had any proof. Now I've seen it with my own eyes, how can I pretend that I didn't? I really don't want to be the one that detonates an explosion like this will be, but I really like the man's wife. Doesn't she deserve to know the truth??
I'm in a real quandry here guys, and hope you can help. What do I do?
(I realise this sounds like either a soap storyline or Dear Deirdre, but it is true!)