Letter: Dear HH, No matter where I am, no matter what important things I need...

[Simonlue]

Dear friends,
I wrote a letter to my girl friend in English. I am not a native speaker, so I am not sure about my English grammar. Please help me to point out and correct the mistakes. Below is my letter:
Dear hh,
No matter where I am, no matter what important things I need to do, on this occasion, you occupy my
whole heart.
Regretfully, I have to perform my duty as a teacher tonight. I have never felt that I am so anxious
in my life because I am eager to go on a date with you at once. But now, time passes much slowlier than a snail craws.
My sweetheart, the coldness and distance mean nothing to me whereas wheather I can get your love or
not means everything to me.
You deserve all my love that happened to you!
Merry Christmas!

Loved,
Simon

Thanks in advance.