"As part of this new update, when one user unmatches with another, the match and chat will disappear for the person who does the unmatching," a Bumble spokeswoman said. "For the person who has been unmatched with, the conversation only becomes greyed out in their Chat Screen."

Why do conversations disappear on Bumble?

If you are having trouble locating a conversation it could be that your match has deleted their account, has been blocked on Bumble or has decided to unmatch you for now. All you need to do is tap the “Help” button after clicking on the match in the conversation list. ...

Do conversations expire on Bumble?

Once they've sent their first message, their match has 24 hours to respond, or the connection expires. In same-sex matches, either person is encouraged to make the first move within 24 hours. The other person has 24 hours to respond, or the connection expires.