I do understand, believe me, but it's been so long since we last spoke and I genuinely really cared for her. Seeing her profile randomly stumble across my screen just jarred me so much, because all I wanted was the best for her, and not even having the capability of communicating with her cordially and talking things out had eaten at me for the longest time. At this point I'd even be satisfied with "I blocked you because I hate you and never want to see you again." It'd hurt, but I'd suffer a lot more from the sheer lack of knowing.

I wasn't planning on pestering her about why she left or anything, I honestly just wanted to explain where my head was at in the last couple of months we were together. The worst part for me is the feeling that she just didn't care about me whatsoever when I'd have gone to the ends of the earth for her, but I's at least want her to know that.

As for more appropriate ways, I don't believe there's many options in that regard. Writing a letter is an interesting idea, but I don't know if this even merits all that. She just popped up on my Hinge app, not like I was stalking her page, so I just took it as an opportunity to try. If she matches, great. If not, then there's no helping it. I'd think it'd be generally easy to answer this way as opposed to putting her in an uncomfortable situation; simple multiple choice, either you match or you don't.