You should be prepared in your heart. He is deliberately alienating you and doesn't like to make phone calls. If you miss the lover you miss so much, he must not like it and become fond of it. Miao Tan, his mind is not on you, maybe on his studies, maybe on others. People who talked for three years didn't forget, but chose you soon after separation, probably to divert attention. He lied to you for fear that you might suspect that he was not sincere to you, but his. Think for yourself.