Work dynamics

Being friends with your bosses can prove to be quite difficult at times. Case in point: I had Monday DAY off and worked the closing shift so that I can maintain my 40 hours a week (plus I can spend the day with James). I come to work on Monday about 10 minutes before my shift starts and dear god, it was like a thunderstorm was raging inside. Jessica, my immediate boss, and Mike, my other boss are both my friends outside of work. Jessica I have known for many years and have come to find a 'niche' in how to work with her, how to read her moods and at times, tailor how I ask a question or for some clarification. Mike I've only known for about a year yet I have come to anticipate his actions and how he likes to run things (which is eerily how I myself like them to be run) and can work seamlessly with him. Knowing how each of them works is an advantage to me but it also proves to be a problem. When I came back to talk to Jessica, I got her side of the story; what got done, what didnt get done, how her ass got chewed for something, what didnt go right about this that and the other, etc. I listened to all she had to say because I knew she needed to vent. After she left, I went to Mike and asked HIS side of the story. I didnt side with either one, just heard them both out and as a third party, could tell where the breakdown of communication occured and what could have been done to prevent future instances. The only problem is, getting them to talk to EACH OTHER rather than thru me.
At times I feel as though everything I ever needed to know, I learned in grade school.