1.
life goes on
2.it happens
3.nothing important
4.something that happened in a past
5.a way to say don't worry
bout it,it happened in the past
6.im not worried about it
7.something little of or no value that happened and had no impact on your life
8.letting some know it was in the past and or to/move on
ripples meaning event,water being you or your life or the main subject
"in the" is the action meaning happening etc.
also is and can be used with "it's just" as a prefix