Always in "Sub Headspace", Horny, and Frustrated?

[Sub-Cocksucker]

Little backstory on me.
Sucked my first cock at 19, was instantly hooked, had my first DOM in mid 20s, he broke and trained me.
I started to experience alot of time in "sub headspace" when with him.

Fast forward to today, I am in my mid 40s, used quite often, very far down the rabbit hole.
I dont CUM when fucked, but it will ooooooooze out of me while I am soft the entire time till my balls are completely emptied.

Once I am used and sent home, I cant seem to snap out of sub headspace, and I am still horny as hell.
I will aggressively beat off, trying to get hard and cum, but I cant, 
The rare times I can cum there is barely any, since its been fucked out of me already, and Im STILL left horny and in that state of mind.
Not uncommon for me to fall asleep with a dildo in my ass, and another not far from my mouth from deepthroating it.
And there are lots of times, I end up playing with toys, not really due to being horny, but..
hard to explain, being in that sub headspace, I just feel like there NEEDS to be something in my holes.

I feel like this is similar to what I have seen described from those in chastity, always horny but with pent up cum.
But I wonder how the sub headspace situation is like for them?
There is horny,,, and then theres sub headspace.

Would love to hear it anyone else has similar experiences, how sub headspace effects them, 
how often you are in it, what triggers it for you.