I had a coworker like this. Always asking me for advice, then going out and doing the opposite. At every turn, she asked me what she should do, and at every turn, she did something else.

She ended up cheating on her husband by going after an ex who had just got out of prison. It was at that point where I (metaphorically) threw my hands in the air and was done. I'm not going to keep wasting my energy trying to help someone who insists on ignoring me and making stupid decisions all the time. She clearly had her mind already made up, there's no need to drag me into it.