lose touch

phrase

1

: to stop communicating with each other : to no longer know what is happening in each other's lives

They were friends in college, but then they moved to different cities and lost touch.

—often + with

She lost touch with her college roommate after graduation.

2

: to stop knowing what is happening, how certain people feel, etc.

—usually + with

I read the newspaper every morning so that I don't completely lose touch with what's happening in the world.

She seems to have lost touch with reality and thinks that she can have everything she wants.