in a text... its only mentally connecting to one person.

in a text... the connection must loop back (reply) or it terminates if there is no response.

in social media, the connection is broadcasted so the connection keeps going even if no one replies you know multiple people saw it.

there really no meaning relationship-wise except maybe you can interpret that he likes being connected to you but maybe not TOO intimately.

it also depends on the context of the initial text.