<human>: So, Girl I'm interested in was at a party, got really drunk, and she told me yesterday she made-out with this guy and one of her girlfriends. It happens, I joke that I wish I'd been there instead, blah blah blah.

I pick up food today on my way home from work, and the guy who she "made-out" with is working the window at this fast-food restaurant, and he recognizes me (haven't seen him in ~2 years), and he's bragging about how he slept with three girls in one night, and mentions this girl as one of them. He ends with: "And the best part is, they don't remember it at all. They thought nothing happened. They even kissed me on their way out in the morning."

I played along, said I was impressed, played the part of the asshole.

Now, either she REALLY remembers and just didn't tell me (possibility), or she got date raped. 

So how should I approach this with her?

Could you distill the essence of the text into 1-3 sentences?
<bot>: Girl I'm interested in was date raped and doesn't remember. I met the guy who did it and he confirmed it in our 5 minute conversation. I'm furious. Don't know how to handle it.