Am I just his backup?

I’m in an ✨entanglement✨Basically I like this guy, and sometimes I think he does too but I really don’t think he’s serious.

He tells me that he wants better communication before we really try. Which my communication does suck sometimes and we do fight over miscommunications. But I also feel like he pushes it. Like he’s asked before that I communicate when I go places, where I go, or how I know my friends if I mention doing something with them. Told me he’s worried I fucked them before or do now. He also often tells me that he tries to involve me in his life but I’m not “open or reciprocative” to doing the same thing, but idk how because I try to invite him to things, involve him with my friends so he doesn’t feel as insecure, but he won’t. And then sometimes he’ll flirt with me heavy but then other times if I even try, he acts like I’m some clingy weirdo and avoids it.

I feel like I’m just an option for him. And that he just holds these “goals” all the time so that he doesn’t have to commit but still can use me as backup if he wants. I feel like if he was really serious, he’d show effort consistently.