burner
n. countable B2 Upper Intermediate US //ˈbɝnɝ// UK //bˈɜːnɐ// burn·er
n. a person you talk to only for a short time, usually by phone or text, and then never speak to again. You use this when the connection is casual and not serious.
n. a person with whom one maintains a brief, casual, and typically non-romantic communication, especially via telephone or digital messaging. Informal register; common in modern social contexts.
He is just a burner for late-night texts.
She treats him as a burner, chatting only when she feels lonely but ignoring his calls otherwise.
In an era of endless digital connection, many relationships are reduced to burner status, where contact is maintained only for fleeting moments of convenience rather than genuine engagement.