How should I respond to a text?
If you're responding to a message from another person, get them engaged within the conversation and give them a true response that is at least a sentence or 2 long. Sometimes, it's perfectly acceptable to respond with “OK” if it makes sense in the context. But avoid the “K” reply, which can feel terse and rude.
What does it mean when you don't respond to a text?
While you may know, rationally, that there are plenty of good reasons for someone not to respond to a text or an email—they're busy, they haven't seen the message yet, they're thinking about what they want to say—it doesn't always feel that way in a society where everyone seems to be on their smartphone all the time.