If there isn't any beginning,then there shouldn't be any ending

I am confused.If there isn't any beginning after all,then there shouldn't be any ending.I remember suffering through the beginning and crying over for the bad ending and everything in between is not really something that I considered as "happy".So,I ask myself.What is that chunk of memory then?I regret but yet I feel that it is so unreal.I let you stab my fagile heart into pieces and end up hurting myself.Why do I suffer the pain of that chunk of memory when there isn't any beginning after all?Do I care so much about the beginning and the ending?Maybe but I believe that there is a cause for all happenings so there must be a beginning in order to reach the ending.Maybe it's just me who is so stubborn to let it go but who will get hurt for nothing?Are you going to tell me that it is a bad dream that happens in my real life?It is really like a dream for me because we are back to what we are before the beginning.Maybe I just trying to escape from the pain but it seems to me that nothing is left from that chunk of memory except for the meaningless pain that you brought to me.Now I am still wondering if there is any beginning in the first place but if there isn't any beginning,why would there be an ending?