@lexy @chenando1
well the mc did this purposely so the girl could hate him.
People who get hurt by loved ones try to forget the one who hurt them....
Hence instead of telling her the truth that he was dying and making the girl feel sad and helpless (she would definitely feel pathetic, coz she won't be able to change his situation in any way)... it was better to be hated.
You know people with terminal cancer also tends to go with same situation... the air is always filled with gloom... the more person is loved by their family, the more sad and painful it is for the people would beside them...
Hence he tried to act like an asshole, just so she would instead hate him... and after he is gone... the girl would feel less remorseful after he dies rather than she would feel while still in a relationship while blaming herself for not able do anything for him.