The five in the morning airport run. The afternoon taken off work for an appointment that wasn't yours. Sitting through the family thing you had every excuse to skip.
Support that costs nothing is pleasant. Support that costs something is what people still mention thirty years later.
Nobody can do it constantly, and a relationship where only one person ever does is something else. But your own last one is worth locating. When did you last go properly out of your way? The answer measures more than the sentiment does.