In extremely advanced cuckolding relationships this is advantageous. Not only does the husband spill his seed removing him from the spem competition inside his wife, but he also drains his balls, and subsequently drains the lust for his wife, leaving only one man to have the ani mal lust to properly mate with her.It's not good. All the arousal goes and you are left with just torment and humiliation
This may seem harsh and not for everyone, but if you accept the husband being denied to anything but outercourse, this is the logical progression.
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