(Almost?) Got Caught Fucking [M]y Wi[f]e at the Public Pool

This is my first time submitting something like this, so I hope you like it. This isn’t really a throwaway account, but I keep it only for subreddits like this and it’s not tied in any way to any of my real accounts. The following story is mostly true, with one or two minor details changed to protect identities. (Just in case.) The setup is kind of long, so I’ll mark where the sex starts.

This story takes place several years ago. My wife and I had been married for two or three years. A little about us:

I’m 6 foot 4, and broadly built. I’m blond with green eyes, but I keep my hair cut very short. I’m wasn’t an athlete, never have been, but I wasn’t hugely out of shape either. My wife and I were both a little chubby, which is part of how this story begins. My wife is a foot shorter than me – She’s 5 foot 4, with long chocolate brown hair and brown eyes. She’s got a lot of curves, but the most notable ones are her breasts. The women of her family are all well endowed, but she’s exceptionally so. I don’t recall what her bra size was around this time, but it had to have been in a the DD or F range of cup size.