Is it normal to never fight in a relationship?
Yes, some couples rarely or never have big fights, and that can be perfectly healthy. What matters is whether you can disagree and bring up problems honestly, not whether you argue.
Some people naturally have similar expectations, handle stress calmly, or talk through disagreements before they turn into fights. A peaceful relationship isn’t automatically a sign that anyone is bottling things up.
The useful question is whether both of you feel safe saying what you want and raising things that bother you. If “we never fight” really means one person gives in, avoids difficult topics, or is afraid of the other’s reaction, that’s worth paying attention to. You don’t need dramatic arguments to have an honest relationship—just room for both people to disagree.