My husbands ultimatum I'm an old fucktoy now

My husband and I have been married for 30 years. I am 48 he is 50. Our kids are grown and I do admit sex had diminished in frequency, length and in effort spent. Mostly my doing I think, I wasn't a virgin when I started dating him, I'd had sex with 4 other guys starting at 14 until we got married at 18. He was a virgin when we started dating (during the time I was still seeing two of those other guys, and he knew it) and when he was 19 he had sex for his first time with me. He'd had handjobs but not BJs and not sex. I think he held that against me and in a way still does. He makes me tell him about my first time, about times with the other guys, describing their cocks in detail and what we did and how I reacted.

I am still the same size now as I was then, size 4, with D cup boobs that sag after two kids and nursing each for a few months. Then of course my husband wanted his time with my milking boobs so I stayed milking and engorged for another 3 to 5 months after each baby was weaned. I have a nice body and figure, I workout regularly to stay firm and can and do wear bikinis on the beach. I gave my husband oral to completion, swallowing, sex in any position, or place he wanted. On our honeymoon he took my virgin butt, as he said it "the only virgin place left". I felt bad, but sex was good I learned after a year or so to cum while he was in me. The thing is the changes now after the kids are gone. He told me outright that the lack of sex was all on me. I had a choice, if I didn't want sex we would stay married but he'd have to get someone else for sex. I didn't want that and sex isn't bad or anything so I told him we'd do what he wants, but I'd do it for him not someone else. He explained that there are things we should be doing, it's been 30 years and he should be able to do "things" he wanted to do sexually. I didn't know what but told him I'd do whatever he wanted, as I always have.

So now, I have been basically his sex slave, or as he likes to call it his "fucktoy" or "cumdump". He calls me slut, whore, cumdump, cumtunnel, even a dumb cunt. I call my pussy a cunt now, and my boobs are tits. I'm getting buttfucked (not called anal sex anymore) more and more. My stools have changed I have so much of his semen pushed up there. He's 9 inches long and still shoots very strongly and it has effects for a couple of days. I've gone to Europe with him and where we aren't known at all, I've walked in public nude with him taking pictures, he walks me onto the nude beach by our house (I've never gone there till this new sex attitude of his) but I wear a collar and he carries a leash. He has had me go into adult stores and purchase pussy pumps, nipple pumps, nipple clips, and strapon dildos. I sometimes pee with him watching, he started putting his fingers in my stream then shoves them in and out of my mouth with my own pee on them. Last night with me in a see through chiffon nightie he took me out in the backyard and made me kneel down and he peed all over me with the nightie on, as we walked back inside it was clinging to my tits and my belly, and my cunt. Inside he threw down some towels and fucked me with the pee all over me.

I'm his fucktoy, I'm essentially his sex slave. It's been the most exciting sexy time I've ever had, I love it and will do whatever else he wants me to do. I'm a 48 year old who discovered exciting sex all over again with the guy who's been fucking me since I was 17, married at 18 almost 19.