Answer:
The writer in this passage wants to convey that they have had difficulty communicating with the person they are writing to, likely due to a lack of trust and understanding between them. They express regret that they were not able to be more open and honest with this person, and that the person's reactions made it difficult for them to express themselves. The writer also suggests that they do not fully understand the person they are writing to and that the feeling may be mutual. Finally, the writer implies that they believe it would be better for them to say goodbye to this person, as they see no way to improve the situation.