我以為他愛你，但事實上，他愛另一個女孩。

I thought he loved you, but as it is, he loved another girl.

Source: Tatoeba

Sentence Composition

1 我 wǒ
  1. I
  2. me
  3. my
2 以為 yǐwéi to think; to believe (often with the implication that the belief is mistaken – unless referring to one's own current belief)
3 他 tā
  1. (third-person singular) (since the early 20th century, usu. male) he; him; his
  2. (bound form) other; another; some other (as in 他日 tārì and 他人 tārén)
4 愛 ài
  1. to love; to be fond of; to like
  2. affection
  3. to be inclined (to do sth); to tend to (happen)
=5 你 nǐ you (informal, as opposed to courteous 您 nín)
=5 你 nǐ you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)
6 但 dàn
  1. but; yet; however; still
  2. merely; only; just
7 事實上 shìshíshàng
  1. in fact
  2. in reality
  3. actually
  4. as a matter of fact
  5. de facto
  6. ipso facto
8 他 tā
  1. (third-person singular) (since the early 20th century, usu. male) he; him; his
  2. (bound form) other; another; some other (as in 他日 tārì and 他人 tārén)
9 愛 ài
  1. to love; to be fond of; to like
  2. affection
  3. to be inclined (to do sth); to tend to (happen)
10 另一 lìngyī
  1. another
  2. the other
=11 個 gě used in 自个儿 zìgěr
=11 個 gè
  1. (classifier used before a noun that has no specific classifier)
  2. (bound form) individual
12 女孩 nǚhái girl; lass