When my brother died I thought I would never move past his death. I was right. You never get over it. But you can't let it consume you. These people, these wonderful people we've lost, would not want us to give up on living our lives because they lost theirs. You love your son. You will always love your son. And you will hold onto his memory because of that love. You won't ever leave him because he will always be with you. But no matter how hard it gets you have to live your life. Because if we let despair rule our life, then why even live? I really think you should talk to someone like a therapist about this. They really do help.
I'm sorry this happened. I'm not aware of the specifics so I cannot comment on the conduct of the police or the people you told. I can, however, say that I do care and I hope you are okay.
I understand your feeling of feeling alone. I don't remember my real mom much since she passed when I was young, but my family has never been much of a family. Lots of bad things happened, and after my brother was killed I felt truly alone in the world. But there are always people out there who will be willing to lend a hand, or an ear. I think it's very kind that you try to help people, and I think you are a kind person in general. Just know that you aren't alone. Even if there's nobody around you. There are people that care about you, even if they don't know it yet.
I really think Endmaster and Mizal are right here. You should hold off on dating until things are sorted out. You won't get many people who are looking for something serious to date a married person. And if you are looking for something serious, you probably don't want the guys who would just be looking for a hookup. And I've heard that dating is quite stressful. Probably best to hold off on getting extra stress while everything is so hectic.
As for what helps me cope, I guess talking to people is usually a safe bet. I tend to try to be doing something all the time in order to not have time to think, but that's not a very good coping method. I'd say talk to people, and find something you enjoy doing. Reading, writing, drawing. Heck, even just watching some TV or funny videos on the internet might help. Just try to dig your way out of the hole, bit by bit. Because giving up isn't an option.
I really hope you start feeling better soon. You are a very interesting and kind person, despite being...eccentric. I hope you have a nice day.