by Morelove4her
Good turn-on with the "double voyeurism". I agree, it's a shame you didn't get a chance to watch him shag her!
Tight story line with a regretful "missed moments" ending.
Turn that regret that you mentioned in the last paragraph into Chapter 2 & invite Tom back to your house to get reacquainted !! [With Nic's approval, of course.]
Chapter 3 could be your wife's version of what happened.
Keep writing. I'm waiting.
Sole Brother Jeff
This is a rather innovative story. The authors seem that you have talent and a storyline worth pursuing. The suggestions of other comments are too obvious. I would suggest instead that one investigate options with more psychological drama between the couple. It gives an opportunity to develop the charcters so the readers get inside of their thoughts and emotions.
An Interesting Suggestion
Male bonding in sharing a moment to admire delicate feminine curves together might suggest a latent attraction between the men. Their joint focus is on the woman in the shower but the act of outercourse is between the men.