Mr.Truelove, You seem to be a really great husband.
Mrs.Truelove, there is nothing wrong with experiencing jealousy. We ALL do. You obviously had the best of intentions, regardless if the outcome was ideal. I would hope from this point, you only see yourself as the catalyst for the GROWTH in your relationship.
While this is predominantly a swingers board, I think you would benefit from a lot of what the polyamorous community has to say about Jealousy. I am including some links, that should be very thought provoking for you.
Jealousy and the Abyss
Polyamory: Dealing with Jealousy
Polyamory: How to Be a Secure Person
While Swingers like to separate themselves from the Poly lifestyle, we can all learn from each other. The poly sites tend to have some very good reading about Jealousy, and how to understand, and work with it.
And at the end of the day, a Mya Angelo quote is always good to remember; " You did the best you knew how to do, and when you knew better, you did better."
You two will only grow from this, is you keep the doors open, and communicate. Jealousy derives itself from fear. Don`t let fear own you.
Best to both of you, you seem like a very smart, happy couple