New Beginnings and Nervousness

I recently ended a long-term relationship and have started dating casually. Last night, I met someone at a bar and we clicked instantly. We shared an intense connection that led us to my place later that evening. It was exhilarating yet nerve-wracking, given our new status as casual daters. Is this just excitement or something more? What are your thoughts on jumping into physical intimacy so soon after a breakup?