我不好意思

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from the message above i can see you tried hard to speak chinese but made little progress on learning chinese.

the message is kinda disorted to be corrected. 

for starters, i assume that you wanna say this: 

I'm sorry

I have a boyfriend. he speak chinese eloquently, but i can't do the same as he does. he was confused, however, today he told me that i cant speak chinese.  im sorry. i want to learn how to speak chinese.

the correct chinese may go like this: 

对不起

我有一个男朋友，他的中文说得非常好，但是我的中文说得并不好。他有些迷茫，然而，今天他跟我说我不会中文。 我很抱歉，(所以)我想把中文说好。

我不好意思