I Went Through A Break Up That Changed My Life [Painful Breakups]

It’s been six months since my fiancé sat me down and decided he was going to move out. I didn’t know how unhappy he was. I gave him the ring back. We tried again but it didn’t work. I did therapy, tried dating ect. I am still so lonely. Still missing what could have been. Night times are the worst. I have tried many things: therapy, exercise, being with friends ect bur nothing lasts. When I am alone and not busy, I cry. I don’t force myself. It just happens. I’m 28, have a great job, am a college student and have supportive friends and family. So why am I still broken? He said he wasn’t happy for over a year. And I honestly true to god had no idea. I did everything. I quit smoking, didn’t drink (he didn’t like it), cooked, cleaned, looked after him. He was my king. But he fell out of love. Why isn’t time healing my pain? Can anybody shed some light on how long this pain lasts?