To change the topic from life-and-limb-danger sticky situations to emotionally sticky situations, I present the following
I had been single for a long time, and was feeling quite lonely. I eventually, through the good folks at match.com, met up with a lovely young lady with whom I began going out on dates. I realized almost from the start that this relationship had no long term future, because she just didn’t have many of the qualities that I look for in a romantic partner. However, I had (as mentioned) been single for a long time, and she really adored me, and heck, being adored is really really nice, as is having someone to wake up next to, so the relationship kept going (the fact that she is a basically sweet and cute person certainly didn’t hurt). While this was going on, however, she started developing really serious health issues that caused her to frequently be in a lot of pain. This caused her to drop out of school for a while. So I was older, better educated, healthier, and had far more money than she. All of which made the relationship totally unbalanced in many ways. I ended up feeling more like her big brother than her boyfriend. But she continued to more or less worship the ground on which I stood.
Eventually I knew that I had to break it off because it wasn’t any good for either of us, but it was incredibly hard, because she was so (unhealthily) dependent on me, so I had to hurt her terribly, and I don’t like hurting people. So, long story short, I broke up with her, which seemed (to her) totally out of the blue. She then stopped talking to me completely (not surprisingly), and got into an incredibly unhealthy and self-destructive relationship with another guy.
The postscript: A year or so later I called up to say hi, which apparently triggered such massive jealousy on his part that she finally moved out. Now she has a job she likes, is applying to colleges to finish her degree, has a new boyfriend she really likes, and she and I have lunch from time to time. (Oh, and her health situation is under control.) So it all worked out… but still, having to break up with her was without any doubt the most painful experience of my entire life.