[DC Comics] How would members of the Flash Family deal with a Speedster Hero who's only interested in being a hero always running saving people across the globe no personal life?

Say The Flash Family are transported to an world in which the only superhero is Speedster who is continually running through the world.

he's operating through entire world while he's the only hero there are countless villians?. He developed power after falling to reach he's loved ones before they died, he's in a bad place mentally, attempting to not only deal woth all villiana alone but also saving people from even minor things or traffic accidents,running himself rugge.

He doesn't visit Family watch movies or do anything which doesn't involve not saving people with the exception of eating and drinking to keep on running.

Eventually the Flash Family find themselves in his world. How long does it take for them to become aware of his "life" ? How would they handle this situation?