2.5 year crush on my married dance instructor…is this an unhealthy obsession?

Hello,

Ive been in a long term nesting relationship with my primary partner who identifies and non-binary for almost 6 years and counting. We are always talking about pursuing polyamory, but havent really taken steps and then the pandemic hit so it’s been hard to put ourselves out there. About 2 years ago, I developed a crush on my female dance instructor who is in her late thirties and married. The crush and obsession has been ongoing for almost 3 years now, and is stronger than ever. My partner is supportive. I am having trouble finding the roots of this crush because I want the thoughts to go away but I also don’t. I feel genuinely in love with her. I think I am questioning my sexuality, and have really identified with being pansexual. Pursuing a relationship with a woman has been on my mind for as long as I can remember, all starting with an intense crush on my 7th grade English teacher. I guess I need help addressing why this is happening and to accept that a relationship with my dance instructor is unlikely, although I value the platonic aspects of the current dynamic between us: it makes me feel good in a dom/naughty sub way because I have my own unique dance style that she appears to respect but also challenges my technique.