"Am I a 'Required' member of the operating crew for a PA-28?"
NO - the P2 term applies only to those aircraft which must be flown with a 2-pilot crew as required by their certification.
"well i clocked 1.1 hours and so did my friend?!
Should I just have recorded the flight as passenger hours? or something else ?"
You were a passenger and cannot log any of the time of that particular flight as flight crew. If you wish to record it as passenger flying, use the 'remarks' or 'other flying' columns.