She used to set you free from your chastity device. She used to let you inside her from time to time. She used to give you the occasional blowjob or handjob.
None of that happens anymore. There's no reason for her to grant you those pleasures.
You see, she discovered that you're a much better cuckold when you're chastised, pussy free, and denied for long periods of time. Now, she lets you cum every few months and she usually does it while holding a vibrator against your caged cock.
It's hard, but you like it. You want to be a good cuck for her. You want to be turned on by the naughty, dirty, kinky things she makes you do, and when you haven't cum in a month or two, you're horny all the time, even when she makes you do things that most men would find overwhelmingly degrading.
Which of her favorite things to make her cuck do is your favorite?
Fluff Her Bull's Cock - Every cuck should be a skilled cocksucker, or so she says, which is why you give lots of blowjobs with that increasingly talented mouth of yours. You hated it at first, but you've grown to love it, haven't you?
Clean Up Duty - She makes you suck his cock clean. She makes you lick his loads out of her pussy. If he cums on her body, she makes you lick that up, too. It's so much hotter when you've been denied for a long time. Your dick throbs so hard in your cage as you do it.
Eating Ass While She Gets Fucked - You almost always eat ass when she gets fucked. Sometimes it's hers, sometimes it's his, sometimes you'll eat both their asses over the course of an evening, and your dick almost always throbs in its little cage.
Sucking Balls While She Gets Fucked - When she rides him on the couch, you're often ordered to crawl between his legs and take his balls into your mouth. You must suck them until she cums. Sometimes she makes you suck them until he cums.
Taking Loads Directly from His Dick - She likes to get off on his cock and then pleasure him with her hand. She likes to direct his dick at your face, or in your mouth, or onto your cute little caged dick. Then she makes him blow his load all over you, making a glorious mess on her cuck and humiliating you while your dick throbs in its chastity device.
Fucking You Up the Ass - Yes, she likes to see her cuck take it up the ass. It started with toys, then advanced to her strapon, then advanced to her bull fucking you from time to time. She likes the way it hurts a little. She likes the way it humiliates you to get fucked. She likes that her good cucky is more than happy to bend over, spread his cheeks, and take it up the ass for her pleasure because he's so fucking horny all the time.
Piss Drinking - No, you'd never drink piss of your own accord. No, you don't like it. Still, there's something about it that turns you on when you've been denied for a really long time. It's degrading and dirty and it makes her pussy wet, which is why she does it. Sometimes it's her piss, but she really loves making you drink his piss. You hate it, but if you've been denied long enough, you fucking love it, too.
She's a dirty girl, but you always feel so lucky to be her cuck, don't you?