text message back up

i need to delete text messages from my inbox but i just love so many of them.
this is probably my favorite 3 in a row:

R: "I don't understand anything about this conversation." (12:15:37)

R: "U sent me a message that said "i didn't understand your last msg" i responded "i didnt send u anything"
      (11:37:31)

R: "I didnt send u anything" (11:31:47)