From many experiences from myself and friends around me I got taught a lot of lessons. Real friends doesn't ask for any money. If they ask and you refuse, you will see that they will say something like that you are not a real friend, because you refuse to lend money. True friends help in any situation, even when you need help. Next I got taught that if your friends give you good feedback or advice you can trust them. But generally it depends on the situation in which you are in. My advice for you is to be cautious and reflect your and your friends actions.