中釋英（SMS祝褔女性普通朋友生日）

If you do not mind I help. I live in US and British Chinese. I can read Chinese. Yes your idea is really quite 老土 in English life style.

You can make it simple.

Hi! Michelle, Happy Birthday. This is Vincent. Haven't talked for awhile. How are you? Can we stay in touch??? Wish you have a wonderful birthday.

In this way, she will write you back.

We as female to say cute only when we were a child. We do not want to be cute as we get older. That sounds immature. Only Chinese will wish young forever, live long life. Americans do not use these.

英文翻譯:
HI! Michelle,
Long time no contact, well miss you. Hope today you have a happy birthday, and bless you always lovely, I hope our friendship can be like your long life!
Vincent

中文意思:
HI! Michelle,
很長一段時間沒有聯繫，也想念你。希望今天你有一個快樂的生日，祝福你永遠可愛，我希望我們的友誼能像你長期的生活！
Vincent

以上內容因語法問題有少少改動,請勿見怪.
而翻譯內容可供你做為參考.
(P.S: 下次若要搵人幫你中英翻譯,請用書面語,唔好用口語)