It's not my anniversary in Life as I know it

When I work a weird schedule like I do this week, I often feel like I drag around thoughts as if they were weights for days. The weight that I have been struggling with the most is an email followed by a conversation I had at work.
Basically, a few days ago would have been my wedding anniversary. I hadn’t really thought about it to be honest. Well, that was until he sent me an email about how he “hasn’t forgotten our special day”. It’s not special once you are divorced. I mentioned this to a co-worker and she said that I am being very one-sided. That he probably still loves me but I have moved on. She told me, he needs time to grieve. For most people I would probably pause to consider this.
But, most people are not sociopaths. Sociopaths lack the ability to have empathy and do not share the same tributes of love as most people do. I have to remind myself, this is a tactic because I want to believe everyone is empathic and kind.
It is apparently a trait a lot of nurses carry, to want to believe and fix things we cannot fix (including people… And people cannot be fixed by other people). It probably did not help that I was young and naive. But in the end, I will not let this bad experience rule me. I will continue to be an empath, love and help when I can… I will just be more cautious about who I chose to get close to me. I just wish when I opened up to my co-worker that she wouldn’t have made it sound like I was one-sided. As if I have moved on and he is pining for me. In a sociopath, they look out for themselves and use manipulation to obtain what they want.
I always thought it was funny, he used to tell me I was too open and someone would use this trusting trait against me. I just did not know it would be him.