Why did things change

Hey y’all! So me and my fiancé have been together for 2 years l. When we got together we never turned our phones off on each other. Never hung up on each other. Made promises we wouldn’t block each other. But now it’s all that. He gets a dry with me and he will turn his phone off FOR HOURS. He knows it triggers my anxiety but does it any ways.. all respect has been lost.. I’m sad