I think I just fucked things up

My friend and I are talking about having a foursome with our boyfriends. However I felt it was only right to mention that I’m afraid of catching feelings for her boyfriend, as I had them before they started dating. She wasn’t angry but I feel like she is a little bit more upset about it than she let on. We both clarified how we felt but I just don’t know if we can move past it or make things less awkward. She’s my best friend in the whole world and I don’t think I could stand to lose her this quickly...I need some consoling and advice because I’m really upset right now