(19M) I've developed feelings for a friend (18F) I recently met at a school seminar. Over the past two weeks, I've sensed a strong connection between us, and I believe she might feel the same way. Should I express my feelings to her?

She (18F) and I (19M) met at a seminar at school, and by the last day, we really clicked. Since then, our relationship has been wonderful. I invited her out three days later to play badminton and just have a good time, and we genuinely enjoyed ourselves—no awkward moments, just the pleasure of each other's company. That's also when I started to feel attracted to her, as I’d never met anyone who appreciated my company quite like she does. Now, I'm torn about whether or not to express my feelings. Honestly, I'm not ready to officially pursue a relationship yet, but I don't want her (or myself) to think I'm only interested in friendship. I really want something deeper, but considering we've only known each other for about two weeks, it feels a bit premature. I’m thinking of telling her on our next outing that I’m attracted to her but not ready to court her yet since we don’t know each other well enough and I need more time. Should I go ahead and tell her this, or should I hold off? I'm nervous about her reaction, and I might be overthinking her feelings toward me. What should I do?