And then I'll only tell you half of it.
After the party ended, you found your wife in the hot tub.
This is based on something that happened years ago. A man hit on my wife in a coffee shop and they became "friends". A few days later they met up for coffee again and they had a conversation like the captioned photo above. At that time my wife had only cuckolded me once while she was on a business trip, but that was strictly a 1 night stand. She hadn't yet dated any other guys, though we had talked about it. She said she felt a bit awkward as she explained to her coffee shop friend that she would love to go out with him even though she was married. She said the look on his face when she told him that I liked for her to date other men was hilarious. They ended up dating for several months and he became her first real "boyfriend". My wife loved having a boyfriend on the side and I absolutely loved it too.
Cuckolding is a very common fantasy and I am sure that a lot of husbands have actually encouraged their their wives to sleep with other men. I think one of the main reasons that many women do not want to cuckold their husbands is because they do not believe their husbands will be 100% faithful. Instead, they feel like their husband really just wants an open marriage. It took me many many years to convince my wife that I had absolutely no desire to be with another woman and that I truly just wanted to be her faithful cuckold.
Your wife spent most of last night with your best friend, but now he apparently is feeling awkward about the situation, so she needs you to be the one who gives him a call to set up their next get together.