Post-Romantic Confusion

I recently ended a long-term relationship and was feeling lost. Last weekend, I went to a local bar and had a few drinks. To my surprise, I found myself attracted to one of my former students from years ago who's now in her twenties. We caught up, the mood shifted, and before I knew it, we were leaving together. The next morning, I woke up confused and regretful, questioning if this was just about seeking comfort or something more. Am I just looking for validation after a breakup? What does this mean for my professional boundaries?