<human>: Can you condense the text into a few key points?

Two years ago I had a short fling with this girl but because she was moving away it did not really work out. Present day I moved to another big city and she also lives in another big city couple of hours away. We met a few weeks ago and nothing special happened. 

Suddenly on a midnight I get a phone call from her that she wants to set up one of her friends with me. She urges me to visit her on a specific date. I suddenly had some thoughts of "is she trying to win me back?" etc.

Now few days until this setup I have been exchanging messages with her and now she tells me that it is three of them. Not two, three girls. She also asks me if I could bring a friend along to make it 3:2 but alas my friend cannot, so it is a 3:1.

Redditors, if it was a 2:1, it would be kinda awkward but I would still somehow be able to manage the atmosphere with my open-ended conversational skills and wit. 3:1 is something I have never thought before. I would like to kindly ask how to maneuver 
this.
<bot>: past fling tries to set me up a date, ends up being a three girl one guy date. how should I tackle this.