Swing and Miss Version 0.55.3 by Infidelisoft - Adult Sex Game

Overview:
The story centers around the protagonist (you) and your wife Fiona. The two of you have been married for over a decade and get along perfectly. You know you're blessed to have a wife like Fiona, but you can't help but wish you had a more active sex life with her...

v0.55.3
The Patreon-supported and chosen final ending to the game
Some small text additions to the Threesome ending