I find this happens to me fairly often; everything ticks along nicely with people if I do/act as they want but the second I don't they end up falling out with me in a huge way and it all turns into a drama.
I think I have people pleasing tendencies due to my dad having anger issues and being horribly abusive to me, and my mum enabling it. I could never put a foot right as a child. So I find confrontation and bad feeling hard to deal with.
I will try to give some examples.
A friend has recently fallen out with me. Our daughters are at school together and every time they have any minor spats or cross words or anything like that she texts me or phones me and moans about it and basically blames my DD. However her DD is actually quite unpleasant to mine sometimes, but I don't contact her about it as the next thing the girls are best of friends. About a week ago I got a long ranty text from my friend because DD had sat with another girl at lunch that day, and her DD said my DD pulled a face at her, and what was I going to do about it? I text back and said it would probably be best to leave the girls to it and that I wasn't going to do anything as her DD is sometimes not too nice to my DD but that kids do fall out and we shouldn't intervene. Cue her having a massive strop and telling me never to speak to her again, basically because I won't punish my DD on her say so, and didn't come back with the response she wanted.
I had a similar experience a couple of years ago. A friend wanted me to go out for the evening with her but beforehand drive 10 miles to pick her up, then drive and not drink all evening, and drop her home afterwards. I said I didn't want to do this, and she too pulled a huge strop with me and hasn't spoken to me to this day, yet has told mutual friends that I was awful to her.
How can I deal with this kind of person? Sometimes I think I'd rather be someone that is a hard faced bitch because at least people won't try it on with me even if I'm not liked by many.