What is a Textertunist? According to an article by HuffPost, it's "a person who behaves in a seemingly opportunistic way via text, only replying to your messages when they need a favor or have something to gain from the interaction.
Nicole Saunders, a therapist, told HuffPost quote, "When there is a lack of reciprocity and responses seem consistently one-sided or transactional, we may feel a lack of social support or, even worse, used and taken advantage of."
The article goes on to explain that if this type of texting is there only negative mark, and they are typically warm & receptive then they probably don't have ill-intentions.
source: HuffPost