The seed of an idea was planted?

I stated in the first entry on this site that I was fully aware of my husbands background when we got married. What he did in previous relationships was fine, but we were different. I could never do that. I'm an open-minded person, but swinging? Come on. I'm open minded enough to go to a clothing optional beach and walk around naked. I'm open minded enough to vacation at a couples only resort. But swinging? I couldn't even wrap my mind around it. Why would I want to have sex with someone else? My husband and I are in love! So when he gingerly approached the subject about 2 years into our marriage - he went very carefully down that road. So carefully in fact that from the initial mention of swinging to our first experience - it was about a year. He brought up the idea by mentioning that a friend from work had said he and his wife had been swinging about six months and they were having a blast. My response .......... "good for them." Like I said - I didn't make it easy. Apparently the seed of the idea had been planted. I thought a lot about it and I'm not sure at what point my mind finally wrapped itself around the idea, but it eventually did - there will be more on that later...................... The question to be answered here is how long did it take you to go from "idea" to actually swinging?