Can’t eat after a breakup

I got broken up with few days ago and haven’t been able to really eat since. I try really hard to eat something and nibbled on different things but my body just doesn’t let me. I need energy to not feel even worse but i genuinely don’t know what to do.

This was my first relationship and we both are still in love and it’s just the circumstances that caused the breakup. I’m also having trouble sleeping.

I want to ask if someone struggled with something like this and has any advice.