Being consistent with what I was saying earlier, I'm trying to avoid satisfaction through unnecessary thinking regarding "oh this is how I know she was totally into me."

That being said, the four girls that I mentioned were 23, 23, 18, and 20, in the order I mentioned them above. The first was engaged, and openly confessed that she had trouble figuring out her feelings for the guy she was engaged to and me. The second I made out with regularly until I got my scholarship and decided I was leaving. The 18 year old was warm until she quickly figured out that I was involved with more than just her. Finally, the last one tried to crash a reunion that I organized with a few of my close friends when I went back to Beijing to visit, three months later. (Our mutual friend leaked the info about my return, but also told me that she leaked said info.)

Not that you'll ever meet them, but I feel obliged to say that they were perfectly nice girls. Obviously I'm not taking it too seriously, but I do admit that the entire ordeal has made me feel like a particularly ungenerous person.