Healthy relationships are conspicuously undramatic. Plans happen on the day they were made. Disagreements are about the actual thing. Nobody has to be decoded on a Sunday night.
Anyone who has spent time in the other kind knows how flat that can feel at first, and how thoroughly a nervous system learns to read intensity as significance. What arrives matters less than what you stay for and how early you notice. It's a recalibration: learning to find steadiness interesting rather than suspicious.