hook up
US /hʊk ˈʌp/
UK /hʊk ˈʌp/

1.
to meet someone and spend time with them
:
•
I'm going to hook up with my friends after work.
•
They hooked up at the party last night.
2.
3.
to form a romantic or sexual relationship with someone
:
•
Did you hear that Sarah and Tom hooked up?
•
They hooked up at the club and went home together.