I need some advice. My best friend of 15 years (S) is my MOH and my other closest friend (L) is a BM in my September 2014 wedding. They are very different people with 2 very different personalities, which is I adore them the way that I do. However, they have been battling since day 1. When we went to look at a wedding gown, there was eye rolling and snarky comments being made between the two of them the ENTIRE time I was in the dressing room and I was not made aware of it until well after the fact. Then, when I did a get together so all of my local girls could meet each other, my BM "L" left after only being there 30 min and not speaking to "S" at all, even after "S" made several attempts to talk. A few weeks later, we went out to look at BM dresses, and apparently there was more of the snarky comments and eye rolling and judgmental comments being made while I was helping another BM with her dress.
Tonight, I got a phone call from "S" saying that she had been talking to my mom and "L" regarding my bridal shower and mentioned that I wanted to pick the date (to ensure that I wasn't double booked with a work thing or another wedding vendor) and, I'm not sure what all was said, but "L" made some comment to the effect of "not that you asked me" when the idea of a location or party ideas came up. I talked to my mom about it and she said that I need to tell them that I don't want to hear about any of the negativity and to just tell them that they need to find a way to get along until after the wedding.
I feel like I need to confront them about this. They are my 2 closest friends and I love them dearly, but it's really bumming me out that they're acting like such children and making their issues/problems, MY problem. Any advice or insight? I'm on the verge of tears and I don't know what to say to them without crying or totally losing my cool and turning into the dreaded bridezilla.