Situationship

I need help /: I’m not sure how to bring up the topic to my situationship about who we are. I like him but I don’t want to waste my time if this is just gonna be something casual. I thought I wanted casual but now I’m confused about what we are so idk if I want casual or not anymore. We reconnected after not talking for 3 years. & We’ve been hanging out and everything is cool but I’m always scared to bring up the topic. I need some advice.