My [21F] husband [25M] posted to Dating.mobi about us having a threesome, then sent nude photos of us to a responder. Am I crazy to be feeling violated?

Hello r/relationships, I made a throwaway for this for I guess obvious reasons. I'm posting via mobile so apologies for any formatting issues. We've been together for 1.5 years, married for just under 1 month.
My husband has been broaching the topic of us having a threesome (MFM), or even just having me sleep with another man while he watches. I was open to the idea, however I figured it wouldn't be a while so that I could at least get comfortable with the idea. And when I eventually got comfortable, that we would look together.
He first brought this up a couple months ago, and usually when we talk about it it's during the heat of the moment when we have sex. I get that it's a fantasy of his, so I typically just played along with it. Again, thinking we weren't going to be seriously looking for a while, because I still wasn't 100% comfortable with it.
However, last week he told me he started looking on Dating.mobi for other men for me. I didn't really know how to respond, so I just stayed silent. However, last night (during the heat of the moment) he mentioned he made a Dating.mobi post about it. I asked him to elaborate, and he said how he made a throwaway, posted on a couple Forum Sections, and got a few replies. And he's been responding to them!!
I again didn't really know how to respond, and this time he asked me why. I told him how I was just taken by surprised, as I had no clue he was doing this.
Today we decided to talk about it a bit more, and I was explaining my insecurities (both for MFM and FMF threesomes, and me being with another man/woman), which include not exactly loving my body and feelings of jealousy. He then bet me that others would find me attractive, started a conversation with one of the men who responded to his threesome post, and sent him my nudes. He also told him to *** to them, and showed a photo of his **** to this man. He also told this man how we're free "basically any weekend" to do sexual acts together.
The photos my husband sent were photos that I allowed him to take of me when we were still dating, in confidence that they would only be for him. And for him to just share them like they're nothing makes me feel sick. Reading thr conversation they had also made me feel sick, where they were just talking about ****ing me and how "hot" it would be. The other man sent a photo of him cumming to me, and the fact that my husband was okay and actually initiated this all makes me just want to cry. He ran none of this past me at all, from sending the photos to telling this man when we're free.
I feel so violated with this all. My husband knows I'm upset but I don't know if I'm just crazy for feeling this way. He technically took the photos of me, so they're "his" but I never thought he'd do this with them. And even if he wanted to do this, I thought he'd at least ask. Run the idea by me, and see if I was okay with it. But I had no clue at all until afterwards.
Am I crazy for feeling this way? What do I do, how do I even talk to my husband about this? This is the only one I know about, but he told me lots of people responded, what if this is just the only one I know all about?
TL;DR - My husband has been searching Dating.mobi for men for me to sleep with, and made a Dating.mobi post from a throwaway asking for a threesome. He responded to users messaging him, and sent my nudes to at least one user without my knowledge, after I explained my insecurities on even having a threeosme. Am I crazy for feeling so violated?
Edit: please, to the people messaging me to talk to them so that they can help "prepare" me for a threesome, or giving me their info in case I'm interested, I'm not. This isn't why I posted. I'm asking for advice because I feel violated, and these messages aren't helping at all.


Source.