This same situation happened to me except I was the other girl. My best friend hooked me up with one of her good guy friends. We had been dating for a month when my frined decided that she liked the guy. She told him she liked him and he broke up with me because he didn't want to get in between us. I was really upset about it and I felt really betrayed. My friend and I stopped talking. Me and the guy got back together and we dated for two and a half years. Things settled down between me and my friend but we were never as good as friends as we used to be. It's really sad. If you are going to say something to Ron make sure you do it sooner than later. Don't wait until things are serious between them to say something. You're probably thinking you'll just wait it out hoping nothing will happen between them but you'll never know.
Just me talking from experience.