I can see texting as a way to keep in touch, but not as much of a personal connection. Even longer texts can be just a nervous habit that supplants other forms of communication. I wouldn't text any more often than I see someone in person or at least telephone. Otherwise, it can be just faux friendship. It's like tracking someone on your social radar, as much a way to avoid them as to interact.
I admit, this could be generational. I'm part of the cohorts of people who actually wrote regular letters to friends and family, sometimes two or three pages. Since that sounds so dated, it might come back into vogue. My father had huge bundles of my letters. I think these were destroyed in one of our periodic flooded basements so they won't be mined by historians in years to come. Chapters could have been the college years, the navy years, etc.