composition

Dear my Darling [이름],

Well!
Things happen for a reason.

Maybe, his appointment to go to Changwon was canceled because of an important reason.

No one know.

However, it\'s good, because you stayed calm even though you were disappointed.

By the way, I think your grammar is better when you are angry or not feeling good.

Hahaha! ^^

Anyway, have a good reading! ^^

See you tomorrow! ^^,

I hope no disappointments will happen tomorrow. ^.^

... Teacher Paula ... ^.~

Dear my Teacher Paula who is getting prettier day-by-day,

>> CORRECT!
Good morning.
>> CORRECT!

>> OR: Good morning!

Time goes by so quickly, it is Wednesday already.

>> Time flies so fast. It is Wednesday already. (You made two expressions which are not connected, so they can\'t be in one sentence. They should be separated.)

>> OR: Time flies so fast. It is already Wednesday.

Yesterday, my boss said he would go to LG Electronics in Changwon City, and it made me very happy and relaxed.
>> CORRECT!

However, he suddenly appeared in the office this morning, I felt frustrated.
>> CORRECT!

I was expecting for his absence, but my hope was shattered.
>> CORRECT!

He might have canceled his schedule to visit them.
>> CORRECT!

In this case, I should try to control myself not to get stressed by him. Hahaha
>> In this case, I should try to control myself not to get stressed by him. Hahaha! (You forgot to put a punctuation mark after your laugh.)

Anyway, I hope you have a pleasant time. ^^
>> CORRECT!

See you very soon!

>> CORRECT!