Hi Doc,, I Had A Bf Who Now Suffers A

Hi doc,, i had a bf who now suffers a nervous shock as what he tells me. He is an employer of a car company wherein two of his employees died after a car accident. We only communicate through messenger and had good relationship before the accident happened. But now he doesn't communicate with me and just tell he has mental problem and doesn't like to talk with anyone and even me.. Am so sad receiving no information about him and so
worried much of his situation. Are these
things normal of his case?