5. He gives one-word answers to your queries
Communication breakdown in relationships is not only a cheating precursor but also an indicator that it is already taking place. If the only response you can savor from his seminars or night-outs with his friends is “fine,” then you need to delve further into what else he could be hiding from you.
To some levels, a cheating partner knows they will eventually get caught. This makes them defensive when you ask questions since they are afraid that you might find out about their secret. They may even start demanding digital privacy.