regret and heartbreak

I broke up with my boyfriend because of various influences that made me believe we were better off as friends. We have stayed very close friends for a year and we even used to hookup sometimes when I came back home from uni. Now, a year later, I have confessed that I am now certain I love him and want him back. He loves me but says he isn’t ready for a relationship because he is about to start uni. I feel heartbroken, lost and de-motivated in every sense now (even though I understand his reasons)