Back story---I have been with my SO for 18 months----we are talking marriage in the future. We went to high school together and have both lived in the same town for pretty much all out adult livwa. We have an extended group of friend who still get together frequently. My best girlfriends are all part of this group. One woman, M, was a friend in high school, but since I left my husband several years ago, we have grown really close. She was also going through a divorce, and we were the only single women in the group, so we hung out a lot. When I ran into SO, she was with me. The whole group knows that she has always had a crush on SO, which goes back to high school. Before I even accepted a date with him, I talked to her about it---I didn't want to mess up the friendship over a man. Friday night, SO confessed to me that my friend has been making advances towards him and it makes him uncomfortable. He didn't want to tell me because he knows how close I thought we were and he didn't want to cause me any pain. He has told her in no uncertain terms that he loves me and is not interested in any sort of romantic relationship with her. She has had a rough time with her divorce. I know she has always liked my SO, but I never thought she would cross the line. We went out Friday night and ran into her---I was distant, as was SO. She called my best friend and she knows something is wrong. She told boyfriend that she was going to call me this afternoon or stop by the house. I don't do drama. I can forgive her, but I don't want to ever make SO feel uncomfortable again. I'm not sure what to tell her. What would you do? If I confront her, she will most probably deny that it happened. I don't want to pit her against me, SO, or our small close group.