I was thinking I am fine

This year was so tough for me I have started working on a new job with a very nice manager that it didn't took so much that I got really emotionally dependent on him, after one month a new employee who happens was in my team in the previous job and she doesn't like me at all and the director fired her so she followed to take her revenge while I had absolutely nothing to do with her being fired, she started working in the same team with me because my manager insisted to recruit her even though I was very uncomfortable having her in the same team with me and that only affected me so much because I was ready to do anything for my manager I was completely attached to him and he neglected completely my request so I can be comfortable working in the team besides that was so weird how she could find me and follow in the same so I was literally panicking and things got even worse because my manager day after day was completely neglecting me focus on her work coming to the office with her while it had been months I was doing full remote and each time I know he is in the office with her without telling me I was in deep pain I spend the day crying and having a panic attack, I feel no matter how much I will describe the situation nobody would imagine the pain I felt I was crushed as I feel ignored by the one that my hear misses the most in this world, if he only could tell me one time to come to the office I would be the happiest person just like that, I was in pain as I was falling deeply for him I was struggling with the idea he is married and he has 2 very cute little girls so I was going crazy literally out of my mind as I can not understand how to master my feelings and if I can stop being so in need and miserable for his attention at least his presence. I went to vacation as I was asked to and it was two weeks in hell, I was sad, uncomfortable and not feeling welcome in my own family which made me more in need for him and I was counting days to come back to work and once I came back he was in the office with her and a new recruit that he was presenting as if she is going to be my superior so I couldn't take the idea that I will not have meetings with him by myself she should be with us and that has driven me crazy I asked to leave without even thinking I had no other job I have had a big trauma, I can not describe how miserable I was because he accepted my resignation and it was immediate, I was in pain I couldn't breathe I trauma and I barely could have died because my upper body won't move anymore, now I am doing physical therapy and surviving all this alone, my only wish now is that I can come back to my work again with him as we were few months even if he neglect like he did, I don't know how to explain it but I miss him so much and I feel if this nightmare won't finish I am going to die of pain, physically it is getting complicated Dis anyone loved someone unconditionally and very silently and got neglected completely because it is not the right thing to do?