run off with
Upper Intermediate (B2)informal
To secretly leave with someone you love (or shouldn't be with), or to steal something and run away
"She shocked everyone when she ran off with her colleague and moved abroad."
Hear it in context

Spring Championship Doubles - Southeast Asia & Middle East
Brawlhalla · 200:54
to run off with yet another crown, another victory.

Sunrise on the Reaping A Hunger Games Novel By Suzanne Collins AudioBook P1
AudioBookEng · 450:03
The Rascal has run off with his district partner again.

Sal Vulcano | This Past Weekend w/ Theo Von #655
Theo Von · 54:49
and let him run off with it and just be hopeful.

The Ones Where Phoebe Stirs the Pot | Friends
Friends · 4:08
to run off with Don and live in a house of cheese.

The Ones with Monica vs. Chandler | Friends
Friends · 34:59
to run off with Dawn and live in a house of cheese.