Answer:
first you are a child, it isn't up to you to settle there differences. them cheating has nothing to do with you, if a couple is always arguing then 98% of the time they both will start falling out of love and start looking for love elsewhere. they are most likely still together because of YOU.
Answer:
TBH JUST IGNORE IT OR TRY ASKING THEM TO TALK IT OUT INSTEAD OF ARGUING FOR THEIR KIDS SAKE
Explanation: