If you are cheated by a good friend, you must pay back ten times aboveboard. Not the kind where you'll be sad if I tell you the truth. )
If you are cheated by GF/BF, then don't ask anything and do nothing. That is to let him/her know that you lied to me and I didn't give you my heart.
If you are cheated by your family, then you should believe that your family will always have the last resort. Because he raised you. Being cheated by your family is not a case. If there is a next time, move out. )
Friendship, love and affection are all deceived and abandoned by life.