Should I confess?

I have been talking to this guy for a couple weeks. I knew him last year but we never talked. This year we have a class together and we're both musicians, so we started talking. During the Thanksgiving Break he texted me telling me that he was 'sort of interested in me'. I was obviously delighted since I've had a crush on him for a very long time. We've been talking a bit but we never mentioned that conversation. I'm a bit worried that he might not have feelings for me. I'm not sure if I should bring it up, I feel like I'll sound too desperate. Should I just let things be or should I mention it? And if I do mention it then how should I do it without coming off as weird?