I relate to this. I had an on and off non monogamous relationship with a guy for 14 months, a lot of it was long distance and I understand why it would end this way growing apart.
But he didn’t have feelings for me and yet it seemed a lot of the times he was interested in me or cared about me. I still ask myself if he meant it and if he even saw us as friends or if it was just means to keep me around and it was convenient, for attention or whatever he got from that…or even just someone to fall back on. I don’t really know. Maybe he feels guilty, maybe he doesn’t, maybe it was an easy decision, maybe he’s questioning or regretting it, maybe he cared about me and maybe he didn’t. When we were breaking up he said he trusted me. Don’t know how much he meant that.
I guess I don’t trust him after that anyway.