One way of knowing you truly love another person (or vice versa) is that you either want what’s best for them or what they want for themselves. Your needs or personal agenda do not factor in to the matter. If for example they want to move to another city, or you know that move would be the best thing for them, then the move is what you want for them too. The German phrase “fall back and I’ll catch you” is parallel to this. If you know for certain that person’s love and concern for you is genuine, then you can go to them any time and ask “What should I do?” And you can be certain their answer will honestly be what they think is in your best interest. Not *their* interest, or what they want from you, but what they think will make you happiest.