Polygamy/Polyamory Stories

This is the first part of a likely series, with the theme of "What's a little____ between friends?" I'm not sure if I'll stay alphabetical, but I'm starting that way, with a story about consensual adultery between a man and his best friend's wife, with the full knowledge and approval of the husband, even his participation at times, such as their first encounter, a "devil's threesome."

A Swarm Cycle Story
Johnny had the score to go, but was staying on Earth to fight. Then his dad decided not to honor the commitments he'd made to his family....

Time Travel. We didn't have a choice and damn little time to prepare (read none) It all worked out though...HA!

A Uncle George: Adventures in the Philippines Story
If something bad can happen, it does happen to Uncle George. Uncle George is a nice guy though and his honorary niece really likes him. Her feelings mature into love and desire for him as she gets a little older. Uncle George is having one of those random bad things going on in his life, so when his niece tells him about her feelings, he accepts her love, both emotional and physical. Uncle George is very happy. Then fate hands Uncle George something really unexpected.