彼に会っていない

haven't seen him

→ 彼
phrase Rare #22,264
haven't seen him Expresses that the speaker has not seen or met him for some period of time, often since a particular past event. The polite form is 彼に会っていません.
JA: 最近、彼に会っていない。
EN: I haven't seen him recently.

リックニュージーランドから戻って来てから、私は彼に会っていない

I haven't seen Rick since he came back from New Zealand.

私は長い間彼に会っていない

I haven't seen him in a long time.

あの時以来彼に会っていない

I haven't seen him since then.

あなたは彼に会っていないと思う

I don't think you've met him.

最近彼に会っていない

I haven't seen him recently.