I have this terrible fear of my loved one's getting hurt every time they go out. Its getting out of control when it comes to my partner and I don't know what to do. Every single time he goes out with his friends at night I have this very intense fear that he'll have a serious accident. I honestly don't know where this fear comes from and how to make it go away. He tries his best to text me while out but if he doesn't respond within 2-3 hours I start worrying, making scenarios in my head, spiralling and eventually having a panic attack. He is usually very understanding but we had a few fights here and there and I completely get him not wanting to check his phone all the time. I have the same problem when visiting my parents but fortunately we usually go out together. 
I really don't know how to ease my mind and persuade myself that he's fine and will be fine. Im glued to my phone waiting for a dreaded hospital call. Any advice would be helpful.