Delete all messages to your ex-boyfriend
Yes, you read correctly, have you left the relationship with your ex-partner and want to erase your messages without leaving a trace?
The trick to eliminate all messages within conversations is as follows.
To do this, you must download the app “WhatsApp Business” from Google Play Store.
Once changed to WhatsApp Business, you and your contacts will see disappeared all your and their previous messages in which you had conversation.
This happens when you change your number associated to a normal Wasap and change it to a company (by downloading WhatsApp Business), your messages are recycled and in your contacts’ Chats they will automatically disappear.