My god guys - you should start a "daily mail" type newspaper for all the scare stories that your mind makes up. I have never worked beyond my levels or shot anything I wouldn't be happy with my parents seeing. Have to admit on 90% of my shoots paid/otherwise the photographer will say to me "if I upload anything your not happy with please can you let me know" I've yet to actually message a photographer and ask him to take an image down but if I did politely ask then I would guess most would be happy to do that because they actually respect my opinion on it. If they refused then I would offer to send them back my fee for the day - if that gets refused then I would move on/not work with him or her again. Its not happened in 7 years - but thats what I would do if it did happen. I wouldn't go to the police or make a big deal about it - it would just draw more attention to the picture/pictures I didn't like. I know its easy to think of most models as being manipulative cows but really I doubt many will be running to the police to make up a relationship with somebody just to get a picture removed. I might be wrong, it will happen ONCE (photographer will be found not guilty) and end up in some shitty paper and you can all say "Told you so". Honestly don't worry about something that probably won't even effect any of you - its just creating a headache that you don't need to have. If you respect your models and treat them well then they won't be in a hurry to send you off to jail for taking a bad picture of them.
If it's both a personal relationship and a photography one it's more tricky...but to be honest, my feeling is that if you'd worked with a partner to higher levels than you normally would (presuming it's not paid work), and within the context of the relationship you maybe enjoyed sharing the work and then the relationship ends and either party feels uncomfortable you probably wouldn't want to use the images... it's not a legal issue, it's just a morals and respect issue.... it's a shame that people have to be protected from their asshat exes...sometimes people are thoughtless, and that can be fixed, but if they're just a total knobjockey it's sad that they can't move on more positively and that the police have to get involved...
What is a bunnyshot mentioned at the start of the thread?