Heart broken

My boyfriend broke up with me 2 weeks ago and told me to never contact him. I respected that since I knew that our relationship was rocky and I felt like shit mentally most of the time.

10 days went by and he didnt text or call, neither did I. Then some days ago he texted me, wanted me back, he Said all the words I wanted to hear and it broke me completely. I didnt take him back and I know it hurt him.

Im hurting so much and I feel so lonely I cant even breath without it hurting. I cant go back to a relationship where we were fighting and Where I felt bad most of the time.

What should I do? Does the pain ever stop?