Aweeee Alone, so sorry that you feel so sad, so empty and hurt. I have been there. Maybe not the same way as you but I have felt the feeling you wrote about.
I do not know your age, and I am not saying your feelings are your age.....ok?
Just know that when I was younger I had those feelings. And where you are they hurt really bad.
What I am saying is....know who you are!!!! Know how wonderful you are!!!!! Know that you don't need anyone to make you feel better!!! You don't need anyone to validate YOU. You are wonderful.... You are you. Whoever that is. Whoever you have chosen to be. Do not allow Anyone to give up on love, on feelings, security, etc etc!!!!!
Been there!! Please think about what I have said!!!