Possessive

I’m been with this guy for almost a month. Things went super fast. This past week I spent every night but Monday and Friday over at his house. He’s romantic and very sexual. Which I like. But sometimes I don’t have the butterflies or chemistry I want. He’s already telling me he loves me. I have no problem with that. But there’s no flame. What’s wrong with me?he calls me his and gets jealous when I talk to other guys. He’s always asking. What are you doing? Whenever I’m with him. Who are you texting? Is he possessive or protective?