My friend's boyfriend recently made a pass at me. I'm married, and I also am really good friend's with his girlfriend so I felt really bad. I made sure he knew I was loyal and honest to both!
I struggled with it, but my friend was in a really bad spot, with no income and raising her grandchild, he was the financial supporter. So, I didn't tell her, as I knew it would really hurt her in several ways, plus she really loves him!