We stay in touch “through” a medium of communication: the phone, email We may

also stay in touch “under” things of mutual concern or interest: a project

we’re working on (but better here would be “under”) We still stay in touch “after” a period of time: years, decades and sometimes, when

we don’t have time, through our sister whom we both see regularly.

We like to stay in touch for as long as possible about how that other is doing and I can

still stay in touch if I am going to die young in 2014 and happy after forty-four years.