Every new match gets a chat that stays open for 7 days.
To keep a chat open past 7 days, you or your match just need to send a message in the 72 hours before the chat expires. This adds 3 more days to the original expiry date.
Only messages sent by you or your match count. Automatic messages from Coffee Meets Bagel don't keep a chat open.
Reopening a closed chat
If a chat has closed, you can reopen it anytime for 99 beans and keep talking for another 30 days. Once the beans are deducted, you can continue the conversation.
On both iOS and Android, this feature appears as “Extend Chat.”