A person who called "friend"

A friend will always stay by your side,not your lover. You should know that,it's common sense. Casy had a close friend, Jason. He was two years older than her,but they remained they remained their good friendship. It's very difficult to have a friend that treats you well. Jason treated Casy like a younger sister, he cared bout her, talked to her everyday, sms her every night, shared happiness and sadness with her and he would try to make her smile when she was sad. But, that friendship was a past tense, it had gone. Casy liked him very much, he was a good guy, a diamond in the sea. She almost fall for him because he was the only person who cared bout her. Until one day, Jason had a girlfriend, he told Casy how happy he was to has a first relationship. He always tell her bout their dates, their sweet relationship, he totally out of his mind, he never talked bout Casy. After a few months, Casy didn't receive any news bout him, she didn't receive his message. When she messaged him, he didn't reply at all. Jason didn't bother her anymore,she was out of the line, there was only his girlfriend in his heart. Casy cried every night because of him, she didn't like to talk after that. She felt alone without his presence. When Jason broke up with his girlfriend, he felt awful and upset. He went back to Casy,he told her everything bout his broke up. Casy didn't blame him, in face she encourage him to go on. They became close to each other again, closer than the past. Unexpectedly, he found another girl after few months. Casy thought he will change, but he didn't change at all. Once again,he left her. If I were Casy, I will never treat Jason as a friend. Jason just used her, he wanted somebody cared bout him, he didn't want to feel lonely, so he went back to her. Friend will never leave you, but your lover does.