04-08-13' Message reply courtesy

Regardless, it is rude not to reply a text. A simple 'ok' will be a good acknowledgement. If there is any bad blood in between, the solution is to clear it up instead of staying aloof and appear reluctant to reconcile. 

Be gracious to others. You might unwittingly did something sorry to others on other occasions but were kindly write off by the person in the name of peace.