So, I have one of the most complicated predicaments you'll probably hear about for a while. Basically, my fiance has asked me for a really long time if we can be in an open relationship. The whole thought of it made me really uncomfortable but after like the 3rd time he brought it up, I finally said yes. The reason I said yes was because we've been together for over 7 years and honestly, sex is horrible. Its like we don't mesh in that department at all and I couldn't take it anymore so I just said yes. But here's the thing. He is too shy to actually go through with having sex with someone else. He talks to people and has a tinder and an adult friend finder and all of that. Talks to all of these people but is too shy to go through with it. Meanwhile, I took the opportunities that were brought forth to me. I was at a party and someone I knew wanted to so I took it but when my fiance found out, he got upset. Like weirdly jealous and started to try to control me so I confronted him about it and he apologized and said he was just being insecure and still wants an open relationship. So I said okay. Well, a few days ago, me and him and his friend got really really drunk. I couldn't believe I drank so much because I blacked out for a while and I think I was sweating and that's what snapped me back to reality because I was totally naked in the guest room with his friend also totally naked in front of me. It sounds scary but I was all for it actually and honestly, it was amazing. I haven't experienced anything that amazing in years. I couldn't stop thinking about it the next day. But right after we did it, I was wondering where my fiance was and he was shocked that I didn't remember. From what it sounded like, my fiance knew. We found him passed out in the living room so we took him to bed. The next day, was a blur because we were all hungover. But the day after, my fiance sounded totally oblivious to what happened. I felt bad so I told him. He told me that he always wanted me to be honest with him, so I was. And rather than be understanding like he said he would be from now on, he went totally crazy. He was really upset and didn't want to talk to me or his friend and I told him that this is totally unfair. He wants to be in an open relationship but its like he wants to be the only one allowed to do anything. And then he tells me that it seems like I'm the only one benefiting from being in this type of relationship but I told him that it isn't my fault that he hasn't even tried to go experience other people. It's not my fault that he gets too shy. He just keeps making excuses of why he hasn't and this morning I saw the guest bed flipped over on the floor and honestly, this whole ordeal has made me so unattracted to him. Its making me want to leave him. I keep thinking that I shouldn't throw away such a long relationship but I feel like the spark is fading away because of this. He wants an open relationship but isn't ready for one. Any advice would be nice.

I think the best would be to leave him. He is contradicting himself and it seems that by an open relationship he means he gets to go and have sex with everyone meanwhile you stay sexually monogamous to him. But I think (I don't know you IRL but from what you write) it seems like you're the one who can really get the hang of it and enjoy it. It's not your fault he's shy and insecure, you didn't ask him for this in the first place. It was him who did it. You may have a seven year relationship with him but trust me, do you really want him in the rest of your life? Now you've seem how jealous he can be if things go well with you but not for him.
Wish you the best of luck with this!