How do you accidentally delete a number.... and do you not have many calls to that number / texts to and from that number on your phone that you could just look at and work out
Has luv ever texted you before? I'm assuming he's has in which case you should have messages from him that say "from luv" at the top. If you delete his number those texts should still be there but just display a number rather than name?
Unless you have a phone from the eighties, you phone will automatically delete messages if it needs more room. However, modern phones can stored thousands of texts anyway.
best way to have played this is to ask luv to ring you cos you are feeling down.... then shout AH GOT YOU YOU SHEEP SHAGGER I FORGOT YOUR ****ING ARSEWIPE NUMBER YOU COCK!
So you have 0 messages on your phone? I have text convos going back year and half, why would you bother to delete them? Trying to hide something from someone