2nd Date

So I went on a date last weekend it was nice and all but I think I made a mistake. I’m not really looking for a relationship. I think the main reason I went was to just move on from some drama that didn’t leave me in the best emotional state. I felt so alone I just wanted to hold someone. I didn’t realize that at the time and just quickly said yes when he ask. The date was fun but it’s really no time to start a relationship especially with prom coming up. I know I could bring this guy to prom ( he even hinted at it after are first date ) but he’s a friend of a friend from a different school so I really don’t know that much about him. We set up another date for this weekend so I can get to know him better but I don’t know how it’s going to play out I know I should just tell him I’m not interested in dating not exactly sure how to. Also I’m afraid that the hormones and loneliness will get the best of me and I might do something I regret. So how do you break it off with someone if you haven’t even made it official ? Or should I just see where this leads ?