2 sentences for 告白 (gào​bái — confess)

1. 听了他的真情告白，她终于动心了。

   tīng le tā de zhēn​qíng gào​bái, tā zhōng​yú dòng​xīn le.

   After hearing his sincere confession, her heart was finally moved.

   Source: Dong Chinese Dictionary

2. 他终于鼓起勇气向心仪的女孩告白了。

   tā zhōng​yú gǔ​qǐ yǒng​qì xiàng xīn​yí de nǚ​hái gào​bái le.

   He finally gathered the courage to confess his feelings to the girl he liked.

   Source: Dong Chinese Dictionary