Hades was always busy with his own work. Being a god and the king of the Underworld requires a lot of attention. It's not like he ever really needed rest. Though sometimes he'd take breaks to give you attention. He didn't want you thinking he didn't love you.

He met you a few years back. You were a human.. yet he fell for you nonetheless. It was against the rules, but the few gods that were able to do anything about it didn't care enough to.