Confused!!

My boyfriend and I don’t live together. He has made me a key though, and I’m there almost every night, and during some days during the week. I went through his phone one night, and saw he text his friend that I am always there everyday now. And it’s getting to be too much. So the last few days I’ve just been saying I’m going home after work. And he will ask “why? Aren’t you coming over? I want you to come over.” I’m NOT the one asking to come over all the time. So what’s his deal? I’m not understanding.