Today is our important date.We saw us over Skype for the first time.the anniversary of the first time we saw each other on Skype. And I canhave never forgetotten what we did wear iwore on this espeacial day. Today is the anniversary of the first time we saw each other on Skype. And I have never forgotten what we wore on this special day.

Based on your next sentence, which refers to three years going by, I think you mean this as the anniversary rather than the actual day you saw each other on Skype. My correction is only valid if this interpretation is correct.

Today is our important date.We saw useach other over Skype for the first time.And I can never forget what we did wear iwore on this espeacial day. Today is our important date.We saw each other over Skype for the first time. I can never forget what we wore on this special day.

You don't see "us"- that would be referring to how you refer to both of you together. Rather, one person sees the other person. Using "And" to start a sentence is sometimes frowned upon as informal. The past tense of "wear" is wore.

Today, I can't believe, three years ago has gonehave gone by so quickly. Today, I can't believe three years have gone by so quickly.

Today, I can't believe, three years agotogether hasve gone by so quickly./ I can't believe three years together have gone by so quickly/

We are together and we love each other within all respect,s, with our mind,s and with our hearts. We are together and we love each other in all respects, with our minds and with our hearts.

I wasn't quite sure what the part about respect was supposed to mean. I interpreted it as meaning "in all ways" but possibly you meant "respectfully." But to say "with all respect" does not really work in this context. It's usually what you say before you tell someone something negative. For example: "With all respect, your idea is completely ridiculous."

We are together we love each other with all respect,with mind, and with our heart. We are together we love each other with all respect,with mind, and with our heart.

We are together. We respect and love each other with our minds and hearts.

I feel so blessed for having you in my life; very much blessed, because meeting a man with you attributelike you is not an easy task. I feel so blessed for having you in my life; very much blessed, because meeting a man like you is not an easy task.

I feel so blessed for having you in my life; very much blessed meeting a man withlike you attribute is not an easy task. I feel so blessed for having you in my life; meeting a man like you is no an easy task.

very much blessed is redundant. "attribute" is a bit awkward, and I feel like it would be implied with "like you"

I consider you sooo speacial. I consider you sooo special.

I consider you soothink you are so speacial. I think you are so special.

Adding extra os is informal.

God is giving me thewhat's best for me, and the best is what I doam getting every single day of my life. God is giving me what's best for me, and the best is what I am getting every single day of my life.

God is giving me what's the best for me and the best is what I do get every single day of my life. God is giving me what's the best for me every single day of my life.

I was confused at this part with "what I do get"

You are a gift of" the best" gift. You are the best gift.

You are a gift of" the "best gift". You are the "best gift".

I don no't want to be a longer emailhis email to get too long. I don't want this email to get too long.

I don no't want this email to be any longer email. I don't want this email to be any longer.

Thank you for your supporting me in a bathrough good times and in a good timebad. Thank you for your supporting me through good times and bad.

Thank you for your supporting me in a bad times and in a good times. Thank you for your supporting me in bad times and good times.

Since you mentioned you've been together for 3 years, I made "time" plural for both bad and good.

Thank you for your teaching me Hhow to be patient in life. Thank you for your teaching me how to be patient in life.

Thank you for your teaching me Hhow to be patient in life. Thank you for your teaching me how to be patient in life.

how is not a proper noun, it is not capitalized

Thank you for your making me happy every day. Thank you for making me happy every day.

Thank you for your making me happy every day. Thank you for making me happy every day.

In my turn, I will support you in a bagood times and in a good timebad. In my turn, I will support you in good times and bad.

In my turn, I will support you in a bad times and in a good times in turn. I will support you in bad times and good times in turn.

I can't wait for to see you in my counrtry. I can't wait to see you in my country.

I can't wait for to see you arrive in my counrtry. I can't wait to see you arrive in my country.

I wishhope our dream comes true. I hope our dream comes true.

I wish our dreams come true. I wish our dreams come true.

I want to thank everyone who helps me to write a beautiful letter. I want to thank everyone who helps me write a beautiful letter.

Please, if you have another words or sentences, help me. Please, if you have other words or sentences, help me.

Please, if you have anoyther words or sentencesing else to add, help me. Please, if you have anything else to add, help me.

I think it's already implied that people editing this will add "words or sentences".