Lose control emotionally / break into pieces or become unusable due to damage, wear and tear, or poor construction/ plans or relationships go wrong:  ................... apart

Two people like each other and are friendly to each other: ………… on

Separate or fall apart on its own or due to wear and tear. It often implies a natural or unintended process of disintegration: ....................... apart

Become happier / make someone happier : ................... up

Finish, use, or sell all of something, so that there is none left : ....................... out

Faint, lose consciousness : ....................... out

Vomit : ....................... up

Compare prices : .......................around

It stops working; be unable to control your feelings and to start to cry : ...................down

Stop trying something : ....................... up

Remove an item of clothing : ...................off

Let someone get into your car and take them somewhere : ....................... up