Hurts to cry

My chest hurts. Everything from my chest up hurts, stressed. This guy i was dating for three months let me go cuz he disnt think he could try the distance thing anymore. He lives two hrs away and did well at seeing me every 2 weeks on the weekends and now he just couldnt believe in us anymore. Things were so great i was falling for him and he was for me too. I feel like im not worth anything. Im not worth it. Ive had so many relationships that now i feel that no one will love me. I have no one. I moved to a new ciry for a job, its been a year and im still lonely. Living alone and working thats all i do. I am sad. So much pain, regret and worthlessness flood my mind. I cannot be alone.