You can only try so hard to be a good friend. If they continue to ask for your opinion on things, yet they decide to do otherwise, then simply… let them. I hate when people say “Well if you were a true friend you’d (enter irrational statement here).” You’ve already tried. Most likely, multiple times. If you decide to disregard my input or advice, then it’s totally fine. I’m never gonna MAKE you do something. But if things happen to go downhill, I’m not going to sit there and sugarcoat what I have to say next. I’m gonna tell you straight up what I think— Like a true friend would.