Quite a few years ago, I worked with somebody who I considered a friend and nothing more, Person A (woman). At the time, I never thought about them romantically. We occasionally saw each other outside work, sometimes just the two of us.
I started seeing somebody, Person B (man). I won't go into all the details, but Person B came to the conclusion that Person A had a crush on me. After a couple months or so, Person A moved to a different department at work. We still spoke occasionally, but didn't see each other outside work except for when they came to my leaving do. We didn't keep in tough after I left my job.
A few years down the line and still in a relationship with Person B, I started to question my sexuality. By chance, I crossed paths with Person A during this time and everything fell into place. I realised that I'd had a crush on them and with regards to acknowledging my sexuality, it was a significant moment for me. It was overwhelming in the moment too, so I didn't stop to speak to Person A. We've seen each other a few times since, but not spoken at all.
For reasons that aren't relevant here, I couldn't tell Person B what was going through my head. In turn, I couldn't be honest with Person A about why I had essentially ignored them. I tried reaching out over text and got no response, though I don't know for certain that they still have the same number. I have since split from Person B.
On the one hand, I think life is too short to not give Person A an honest explanation and apology. Even if there were never feelings on her side, we were friends at one time.
On the other hand, it was years ago now and I appreciate the moment probably was not as significant to her, so it seems best to leave it.
Any outside perspectives appreciated.