Invite your potential over for dinner and discuss it with your wife present. That makes it clear that the whole thing is honest and open on your part.
May I ask the ages of yourself, your wife, and your potential?
I wasn't originally planning to share this much info, but at this point, anyone who knows us will recognize us from our comments anyway. I'm 37. My wife is 33 and the other lady is 28.
We did invite her for dinner. She said she would like to come visit once things are resolved with her mom. Her mom has been gravely ill and she's been taking care of her. She lives almost two hours away, so there's no such thing as a quick visit.
After our last interaction though, I'm not sure if she's comfortable with that. She seemed very uncomfortable to be around my wife when they met. It seems like this is going to go nowhere until I make my intentions clear because she's going to be respectful of our marriage.