Lose touch.
[Slang] LOSE TOUCH. - Learn How Relationships Fade with English Slang
Cease to communicate.
To "Lose touch" means to stop communicating with someone over time, often resulting in no longer being informed about each other's lives. This phrase reflects how relationships can drift apart when people fail to keep up contact.
Example Sentences
After college, we just lost touch with each other.
After college, the speaker and their friend stopped keeping in touch.
Don't lose touch after you move to the new city!
The speaker is advising someone not to stop keeping in touch after moving to a new city.
It's sad how people lose touch when life gets busy.
The speaker is lamenting how people stop keeping in touch when they get busy with life.