go together
US /ɡoʊ təˈɡeð.ər/
UK /ɡoʊ təˈɡeð.ər/

1.
to combine well or be suitable for each other
:
•
These colors really go together nicely.
•
Do you think cheese and jam go together?
2.
to begin a romantic relationship
:
•
They started to go together last month.
•
Are John and Mary still going together?