Long time no see!
Beer after being sober for so long was so good it brought me to tears.
I was told "long time no see" by a person that I had never met before.
This is kind of a "set phrase" in Japanese, though we're going to treat it like a vocab word here (because it's so common and useful!). You know that 久 means "long time" - so now let's pay attention to the kana: しぶり. Just imagine that she buried you alive, then a few days later came back to dig you up. The first thing she says is "LONG TIME NO SEE!"
You learned this reading when you learned 久しい. It's the same one!