A relationship can survive disagreement and quietly fail under repeated scheduling conflicts.

Relationships rarely end over the big disagreements, which at least get discussed. They end through a long series of failed attempts to find a date, each one reasonable, none of them meaning anything, until the accumulated absence has done what no argument could. Logistics are undramatic and they are what actually kills friendships.

So treat scheduling as a matter of substance rather than admin. Put a repeating thing in the calendar rather than negotiating each time. And when you notice three failed attempts in a row with someone you value, that is the moment to name it, since the fourth failure will start to feel like a verdict rather than a diary problem.