嗯哼我爱你
[ng4 hēng wŏ ài nĭ]
In English, this would translate to 'En-hem I love you'. '嗯哼'('en-hem') has no literal translation, just adding extra flavor like emotive pause in Chinese conversation before declaration of affections to make speech less abrupt. It could also sound playful and endearing, showing someone expressing their love in a soft and indirect yet cute manner.