He's not so sure Tadashi does. He hopes he does, but there's doubt there, along with a multitude of other mixed feelings. Some Callaghan is aware he's displaying, others, like the trace of strained guilt...

And then a bit of surprise, not so much from his phone going off...as Tadashi's comment on it. A bit taken aback, a bit uncertain- and then clouded, as the proverbial mask returns with an exhale of breath.

If it'll make Tadashi feel better- fine. And he'll at least be able to identify who it's coming from.

"All right."

Not that he expects he'll be the one to send the first message often, if at all.