I mailed the ring back to him at his dad's house in October and last Friday- he (the ex) called me here at work. We talked for about 1/2 hour and the conversation went really well- just went over old times and who is where / doing what. We are both married so it wasn't uncomfortable at all.
He did say the sweetest thing- "I don't care if you gave the ring back or not- our relationship is not over until I say it's over!!"
So, I'm glad I gave the ring back to him. It all worked out!
Sue