A true case :
Suppose a student is feeling helpless, alone because he has just shifted to a new city in a foreign country and is unable to find a place to live because rents are too high. Also, he is late by two weeks in his studies and fears that he won't be able to catch up if he doesn't get settled soon.
He is very ambitious but at the same time extremely afraid of failure. He constantly feels bad about this for a day and two and feels like giving up on his life. (He had have this suicidal feelings in past as well but somehow he was fortunate enough that he had people around). He tried to jump in front of metro but couldn't muster up the courage to act. Three metros went but he didn't jump in the end, soon he went back and contacted a person (met a day before) for help; he described what happened with him and the contacted person offered him to stay in his house. Now, one day after, the student seemed better and able to go to classes and eat properly.
Is the thing unethical/wrong/immoral? Did he use the "niceness" of a human being?