Hey everyone!

I have a bit of English slang for you today!

The word is “keeper” this word normally means a person who manages or looks after someone or something, however the slang meaning for the word keeper means someone or something good - worth keeping forever. This is often used to describe someone’s significant other.

For example:
John: hey Ben! How is your girlfriend Sarah!?
Ben: She’s a keeper!

Ben’s response implies that he likes her a lot and hopes to keep her.

I hope you found this helpful! Thanks guys!