For the record I use it for chatting with friends from a different website and activities but have noticed a lot of ladies using Telegram (WhatsApp is another one but its owned by META / Facebook
and THEY cannot be trusted)
one of the features in Telegram is you can set "Auto delete" on all chats for all contacts. (minimum is 24 hours) This only applies to your side of the chat. But fear NOT! you can go to any chat and delete from both your side and theirs and it will be as if the chat NEVER happened (no evidence anything that should not have been discussed WAS discussed)
Might be useful or not but I have been seeing more ladies on various sites starting to use this.
But be warned, if you give it access to your cell phone contact list... anyone of your friends (vanilla or otherwise) will see you have it in their contact list on their phone.