Three stories:
1) So it's 2 AM and I'm sorta lost because the last train only brought me a few stations away from my dorm. I'm looking around the station to ask someone, anyone (passer-by, bus driver) if they know the way back to the area where I'm living, without much luck. Finally I see this one lone girl walking and I go out of my way to get near her and ask for directions. Here's how the exchange went:
Me: "Hey, erm, do you know how I can get to XXXX from here?"
Girl: "Yeah, sure, I live there! In fact I got lost countless times myself, so I know exactly the way now."
Me: "Great! Are you going home right now?"
Girl: "No, I'm going to this party."
Me <kinda puzzled that she's going to a party on her own at this late a time>: "Oh okay. So could you give me some directions please?"
Girl: "Sure, you go this way for a while, then turn left after the sign, straight ahead and you should get there eventually."
Me: "Okay. Hope I won't get lost, got a pretty lousy sense of direction."
Girl: "Well, I really wouldn't want you to get lost like I did back then, so you should definitely tell me when you're home <gives me her number>"
Me: "I'll definitely will, thanks!"
<gets home 40 minutes later>
I text her.
Me: "Thanks again, I finally got home. Your indications were perfect. I'll definitely pay that back." (I actually don't remember for sure that I typed that last line)
Girl: "Great, I'm glad that you got home blah blah blah."
I should mention that this was entirely in French, and French has a polite/formal "you" ("vous") and a casual "you" ("tu/toi"). Up until that last message we'd been using "vous" even though it can be awkward when you're in your early 20s. Only in that last message did she say "I'm glad that vous (tu?) got home". Meaning she was trying to act more friendly.
Even at the time I knew there was potential there.
I never replied or contacted her again.
2) This Chinese girl hangs out at a Japanese conversation group I go to. We get acquainted and all. One time another guy we got to know at the meetup, she and I decided to have dinner together at the guy's place. We get somewhat flirty (me going "won't you teach me Chinese?" to which she replies with a "Yeah, I will" in a playful manner). She had this Chine top, and when we got out of the apartment she goes "I can't button up my collar, could you help me?" I obliged but can't do it cause I'm fucking useless with my sweaty hands. She later told me via internet chat that she asked on purpose so we could have an opportunity to kiss, which I was completely clueless about.
Long story short: I had plenty of opportunities since that time to get with her, and we did get flirty on occasion (including explicit MSN chat), but preventing that were the fact that the other guy turned out to be a complete creep (didn't want to deal with him or risk having her put in danger), that some of her comments towards me hurt my pride (and rightfully so) and that she herself had her issues. Also, I think I let myself be somewhat cockblocked by my ex/best friend, although not entirely out of jealousy on her part.
I shouldn't regret it at all, cause honestly it would have been a week-long fling at best and she was a bit cray cray, and yet I do cause I've had so few girlfriends so far :/.
3) We're having a Christmas/New Year's Eve party at my friend's place with his girlfriend, his roommate and a girl friend of his roommate whom I know he was attracted to. Nice party, great food, good fun. When it's time to go to sleep, my friend and I had it all set up so the girl friend would have to sleep in another bed in the roommate's room. But when we tell her about it, she starts going "I think I'll sleep here on the floor", "here" being simultaneously where we had dinner and where I would be sleeping. We're all like "What? That's crazy, we have a bed in XXX's room, just go sleep there!" but she argues for a while. She told me later that she wanted to sleep in my bed with me. I also learned that she was not interested in the roommate.
This one I don't regret much because a) whatchu gonna do, I wasn't gonna be a dick to my friend's roommate who had a crush on her and would be sleeping in the room next to mine, and b) she too, as it turns out, was a bit cray cray.
I guess I attract lunatics.