Someone I'd know for about 7 years, quite a demanding friend, always in contact a few times a day. I was very generous to her because I've got more than she has, and she always grabbed everything with both hands (I paid for a holiday, gave her clothes she'd dropped hints about, paid for meals etc.)
She was quite full on in contact but hey ho no problem, we're all different. Then one day I whatsapped her as normal (it was normally her making contact but she'd gone quiet) Nothing. She was online but ignored me. Left it, tried again a few days later with a 'hiya, how's things'. Nothing.
This went on for two weeks, bearing in mind she was the one in contact about 5 times a day, it was really weird. I asked if everything was OK. Nothing.
After three weeks, I could see she was posting all over the place so I just asked had I done anything, what was wrong. She wrote back a horrible email saying she didn't want to speak to me anymore, she couldn't be bothered and was really very rude. I replied courteously. I wished her well, I was polite and more or less said 'ok, your decision, good luck'.
She then proceeded to slag me off to everyone saying I was needy when in fact she was the one who was contacting me endlessly every day. In retrospect, I am so glad to be rid of the friendship, she was a taker and abused my generosity.