Is it normal to argue once a month?
Depends.It depends
Arguing once a month can be normal, especially if you both feel heard and can make up afterward. What matters more than the frequency is whether the arguments stay respectful and get resolved.
Lots of couples have disagreements now and then, and once a month isn’t automatically a sign that anything is wrong. People have different needs, stress levels, and ways of communicating, so the occasional clash is part of sharing a life with someone.
Pay attention to how the arguments go: Can you both speak honestly, listen, and move on? If they involve insults, threats, fear, or the same unresolved fight on repeat, that’s worth taking more seriously—even if it happens less often.