A person who are really good to you, won't do all the things to let you feel uncomfortable. Firstly, they will "Never blame you,never be fake to you & support you always"
Sometimes, an argument will let you awake and see things more clearly.
Then you will understand, maybe the past person was just a dream.
Be grateful don't be sad, maybe there's disappointed but everything will be pass after you've refresh your life.
"I'm not perfect, but I'm truly good to my friends."