run away with
phrasal verbrun away/off with somebody | run away/off (together) 
- to leave home, your husband, wife, etc. in order to have a relationship with another person
- She ran away with the next-door neighbour.
 - She and the next-door neighbour ran away together.
 
 
run away with something 
- to win something clearly or easily
 - to believe something that is not true
- I don't want you to run away with the impression that all I do is have meetings all day.