Confession of a Teacher and Her Student's Father

I'm in my mid-thirties and have been teaching high school for almost ten years now. Last year, I started dating one of my former students' parents, specifically the father of a student who graduated last spring. We met casually at some parent-teacher meetings, struck up conversations, and found common interests and a chemistry that we both didn't expect. It was a mutual attraction from the start, no mixed signals or confusion about boundaries, just a connection that seemed to come out of nowhere but felt inevitable. We've been together for nearly a year now, with everything being completely consensual between two adults. I'm engaged to this man whom I adore and respect deeply; we share a beautiful home and are planning our future together in the next few months. Yet there's something about teaching his son that has always felt... unsettling, despite knowing full knowledge that it's just my job. I've never had any romantic or sexual feelings towards his son, but there have been moments of awkwardness and discomfort. For instance, I remember once when he was late with a homework assignment due to family issues. It was a situation where I could see both the student and his father, it made me realize that my relationship crossed professional boundaries in a way I hadn't intended. Yesterday, we had our first day of school after a long summer break. His son showed up looking more mature than ever before. As I taught him about calculus concepts with detailed explanations and visual aids, there was an intimacy to the interaction that felt strange but not exactly wrong or harmful. It's just... complicated. Sexually speaking, we've explored various kinks together over this past year, nothing extreme or illegal of course, all within our comfort zones as adults who love each other deeply. The physical aspect is one thing, but teaching his son another brings a whole different level of complexity to the relationship dynamic. So here's where I'm conflicted: How do I reconcile these feelings while maintaining professional integrity? Am I being overly cautious and paranoid about something that isn't actually an issue given our clear mutual consent as adults? Or is there truly an ethical dilemma here that warrants more careful consideration than just acknowledging it exists? What advice would you give to someone in my position?