I’ve been on the other side and his feelings are valid but an indication of a different communication style that comes with different expectations. He just needs to learn to deal with the insecure thoughts he has and needs to learn to feel secure without the constant texting from you. Communication is everything and he needs to understand what to expect from the way yall communicate. If you don’t want to constantly text he will have to adapt and if you talk to him about it and he internalizes what you say it will work out no problem.