Awesome! It matters how we go about it but the common goal remains the same. I wanted to personally thank you for not only wanting to share the truth but being very careful how you do so. You make the call but you might consider, given the opportunity, dropping a little blurb just to make sure his juices are still being stirred. Maybe say something really simple like, "yeah, it was the UN thing that got me going." And then change the subject and let it go. If your friend hasn't clicked on that one yet, he will.
Just an idea
Gig