go back
verb
Definitions
To return to a place after having been there at a previous time.
(of two or more persons) To have known each other for a certain length of time.
Example: Bill and I go back to college.
To extend into past time.
Example: Bill and I have a friendship that goes back years.
(used with "on") To abandon, desert, betray or fail someone or something.
Example: You promised me that you'd pay up today, no going back on your word.