<human>: Can you provide a brief overview of the text?

I posted this on a more specific subforum, but we felt responses from those not part of the lifestyle would also benefit.

My wife and I have been together for 25 years now, married for 20. Our oldest is turning 18, and we have a 16 and 13 year old as well. Our daughters are the youngest and oldest, our son is the middle child.

It has been a cuckolding relationship and we are still active in our lifestyle (this means that I enjoy my wife taking multiple partners). The point of interest is that I have only fathered our youngest child; we sought out suitable men for our interest in breeding (slang for her being impregnated by her partners) and decided it was something we wanted.

We had however agreed to tell our children about it when they were old enough. I have recently discovered this forum, so I wanted to ask any opinions you might have on this matter.

This is important information for any child to know about their biological parentage I believe, but I can also understand that this may severely strain our relationship with them. 

I welcome your opinions on this matter, and if there are any other.
<bot>: Requesting your advice on telling/whether to tell our eldest children that their biological fathers are different men through consent, as a part of our lifestyle.