edit: i have resolved it, thanks all for the help!!

I'm not trying to sound insensitive or something but i don't know what to do. I'm in love with two other girls, and so we agreed to be in a triangle, but now her and the other girl have split. I thought both of the girls were poly (one of them hadn't seen an issue when i got with both of them) but it turns out, as she just told me, that she wasn't comfortable with it. Do i break it off with the non poly girl? Do i break it off with the poly girl? Do i continue the relationship? Do I break it off with both?? Im extremely new to polyamory (this is my first serious one ever) please help 😭🙏