It always starts out as just a fantasy and some hot bedroom talk.
By my estimation, only about 10% of couples that actually talk with each other about cuckolding and breeding outside of their marriage, actually go through with the cuckolding part of it.
For a little more than half of those couples, the breeding usually becomes reality.
My husband (now ex) and I talked about cuckolding and breeding for more than a year before I agreed to try the cuckolding part of it.
Once I cuckolded my husband the first time, I couldn't understand why I was so reluctant.
I really enjoyed cuckolding and so did my husband.
Over time, breeding was a natural result, (black men are VERY persuasive about breeding).