The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

...to satisfy your need for INTIMACY.
The Big Bang Theory Season 2, Episode 15

...that a disinterested onlooker
might mistake for INTIMACY.
The Big Bang Theory Season 6, Episode 1

but I do like the idea
that our next act of INTIMACY
The Big Bang Theory Season 11, Episode 10

He's battled INTIMACY issues
his whole life.
The Big Bang Theory Season 9, Episode 23

instead of pressuring him to
accept INTIMACY on your terms.
The Big Bang Theory Season 7, Episode 10