tā / fā / xiàn / nǚ / péng / you / yǐ / jīng / biàn / xīn / jué / dìng / jié / shù / zhè / duàn / gǎn / qíng

他发现女朋友已经变心，决定结束这段感情。

He realized that his girlfriend had fallen out of love and decided to end the relationship.