When do you give up, if the person continuously seeking your advice never heeds it??

OMG i know this situation. after repeatedly comforting a girl (woman - she’s even older than i) after every heartbreaking breakup with her bf, and every time she would say “This is the Last straw!” she would ALWAYS take him back. ALWAYs. so i would feel like a loser for comforting her for hours, offering a place to say, telling her she’s better without him....i mean he did some really stupid things.

Well i told her i no longer wanted to hear her problems with the bf because she’s basically signing up for them and i can’t be bothered to waste my time and energy anymore. She stopped. And a few years (yes years) she finally did away with him for good. ... at least i hope - it’s only been a few months.