Breakup and wanting him back

Hi everyone. I'm going through a difficult breakup right now. I was in a relationship for almost 3 years, and I still love that person very much. He recently said he doesn't want to continue the relationship, but I'm finding it very hard to accept.

I keep thinking about him and hoping he will come back. I overthink a lot, imagine different situations, and keep checking my phone to see if he has contacted me.

Because of this, I'm feeling very sad and anxious. I'm also finding it difficult to sleep, concentrate on my studies, and enjoy my daily life. My exams are going on, which makes things even harder.

I don't want to stop loving him suddenly, but I also don't want to keep hurting myself like this. I need someone to listen, understand me, and guide me on how to handle these feelings.i want his back by understanding me.