Arguments

yesterday Me and Aj had some argument and we all know , arguments are always about petty things. I was wondering, how come we are still arguing/doing discussion over nothing. I tried to find the reason. There was none.
And wonder ... I kept my cool. Ye, I got that only with him. He deserves that. Later I realized he was worried about some other things and this argument was just a way to letting things out. As always we just laughed at the end.