so~~~what i want to say for u is that u are ~so lovely

我想对对你说你真是漂亮！
LOVELY一直被以为是可爱的意思，其实口语里面是漂亮的意思

所以，我想对你说的是，你真可爱。

所以~~我想对你说的是你~~如此可爱

lovely
adjective ( -lier , -liest )
exquisitely beautiful : you have lovely eyes | lovely views.
• informal very pleasant or enjoyable; delightful : we've had a lovely day | she's a lovely person.

本人认为说可爱也没问题