しね

you know; after all

→ し
phrase Uncommon #13,152
you know; after all A sentence-ending expression that gives a reason or adds information the speaker assumes the listener can understand or agree with. This is different from 死ね, meaning “drop dead.”
JA: 今日はもう帰ろう。明日も早いしね。
EN: Let's go home now. We have to get up early tomorrow, after all.

幸い私には話せる相手がいるしね

Luckily, I have someone I can talk to.

今日は疲れてるしね

I'm tired today, after all.

にもなるしね

It can make money too, you know.

— es[エス] (2001)

午前午後にもうるさいしね

They’re picky about whether it’s morning or afternoon, too.

— ビッグ・シック ぼくたちの大いなる目ざめ (2017)

どうせ保険取り戻せるしね

We can always get it back through insurance anyway…

— ファイト・クラブ (1999)

俺にはクリスマスなんか愛する家族もないしね

It's not like I have a loving family to celebrate Christmas with, anyway.

— ラブ・アクチュアリー (2003)

方々見物した熱海にも行ったしね

We did some sightseeing in various places, and went to Atami too.

— 東京物語 (1953)

ツァオおばさん来てくれませんしね

Aunt Cao won’t come for us either, you know.

— 紅夢 (1991)

家族みたいなものだしね

They’re kind of like family, after all.

それにみんなに仲間できるしね

And everyone gets to make friends, too.

ケイティ・マルカム死んじゃったしね

Katie Malcolm died, after all.

— ミスティック・リバー (2003)