If I ever stop texting back in the middle of a discussion, it's usually because I'm either too busy (job, school, social life, other responsibilities), my phone is dead, or I'm asleep. I never communicate through text unless I'm meeting up with someone, asking a simple question that needs a response, or conducting business. If it's more than two sentences, we'll usually talk on the phone or meet in person. People use phones for so many different reasons that it's hard to generalize about why they stop texting back in the middle of a conversation. But here are some possible explanations: They're bored of talking to you and want to move on to another subject. You've said everything you had to say on the topic and want to change the subject. They have other priorities at the moment and don't feel like responding. It could be a number of things, but the most important thing is that you should understand why your friend stopped texting back in the middle of a conversation. Only then can you try to fix the problem.