Its 4am here and I still havent been able to sleep. He has been crying the whole night I dont know whats wrong or what to do

I would take him to the vets,to make sure he's not in pain

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Where is the female during the night? It is possible (though not likely) that she has some retained ovarian tissue left and he is reacting to that. I would crate him as far as possible from the female. Is this a behavior that gets worse every 6 months or so? If yes, then I'd get the female checked. Just wondering out loud!

Where is the female during the night? I would crate the male as far away from her as possible at night. I wonder if she has some retained ovarian tissue left.? I think I read that she is spayed. If this behavior gets worse every 6 months or so, then I'd have her checked. Of course if she isn't spayed that's why he is acting the way he does! Males are 'aways' in heat!

That happened to a cat that I had. About a year after she was spayed. she started coming into heat (she thought she was atleast) the vet had me put her on bith control pill for awhile. So anoying. She ended up dieing for mammary cancer probabaly from the pills. Grrrrrr!
I hope that is not the case with your girl.

As for the boy. I think you will be very happy if you neuter him. I had mine done earily hoping to avoid marking behavier around the house. So far it has worked.