Ryan asked her straight up if she has had sex with Matt. This by what she said in a post..
That butt on lefty. Good god, man!.
As someone who's going through this exact thing right now, long distance no less, I can tell you it's a good thing she ended it there. She didn't dig a hole for both of you by not reacting, or giving you some non-directional answer. It was neither of your fault, you can't help how you feel about someone..