tā / bù xiǎo xīn / shuō lòu zuǐ / bǎ / shēng rì / jīng xǐ / tí qián / gào su / le / tā

他不小心说漏嘴，把生日惊喜提前告诉了她。

He accidentally let it slip and told her about the birthday surprise in advance.