how do I friend zone him??

OK so I recently broke up with my boyfriend and I'm starting to make some guy friends and this one guy is very flirty and I flirt back just because that's my personality but I'm scared that he's going to get the wrong idea but I kinda just want to be friends. He seems like a nice guy but I definitely don't want to be in a relationship with anyone anytime soon. But I'm also unsure if he is trying to like talk to me or he also just has a flirty personality! Lol help pls before this gets worse 😂