辜負英文plz..........

【辜負】違背人家的好意。fail to live up to (something)
e.g. He failed to live up to his parents' expectations. 他辜負了他父母的期望。

vt. disappoint 使失望

someone were/was disappointed you....e.g He was disappointed that other guests were not coming.
其他客人沒有來, 他感到失望。 I'm afraid you're very disappointed with me.
恐怕你對我是非常失望的。

to disappoint/to be ungrateful to/ to fall short of one's expectations