“对不起,我骗了你”用英语说

I'm so sorry that i lie to you。
cheat 一般是为了比赛，考试等利益之类而欺骗某人；
deceive是为了得到你想要的而欺骗某人；
lie to是欺撒谎。
所以这要看你要哪种性质的欺骗了，lie to有时可能是white lie。

I am sorry, I cheated your
应该是这样说吧。

sorry but i lied.

I am sorry that I lied to you.

I lied to you. I am sorry.

I'm sorry to fool you

sorry, i lied to you
sorry , i cheated on you.