Seperation Date

My Spouse left a residence in August of 08 as well as he is telling me which this is a date of seperation even though he didn't file for divorce until May of 09.  He didn't do this deliberately which you can tell, but it is an area of contention right away as well as do you have any genuine grounds for fighting this in court.  My arrogance is which you went to 2 or 3 marriage couseling session in a tumble of 09 so you would reason which a clock upon a 2 year period in PA would begin in Dec of 08 as well as not August of 08