How do you tell someone you dont want to be a couple, but still want to have a similar relationship?

To clear a few things, This person I’m talking about i met through a mutual friend at a club. We hit it off pretty good and have been getting to know each other little by little. We’ve only been on a date once and rarely see eachother. I like them, just not in the “couple” kind of way. I may sound like a huge ass, but I’m not ready to fully commit to a relationship yet. (past trauma from a toxic relationship) I am just looking for some advice, not criticism. Thank though