Cuckold Life Simulator

Cuckold Life Simulator
is a story about paying enough attention to your other half or she will find someone else.
An office slave named Slavik (Slavek) comes home early one day and catches,
his wife and her new fitness trainer having sex.
Watching this, he realizes with horror that he is aroused.
Deciding to test this reaction, he watches them the next day as well.
And so, gradually, day by day, he increases the extent of his cocooning, masturbating on his wife and trainer,
and then taking part in their sex.