Rant time! Need advice.

So me and my boyfriend have been together for 5 years off and on (almost 2 years on) we have an apartment together and a dog. I have been jobless for about 4 months now, and my boyfriend has been nothing but amazing in taking care of everything while I job hunt. However, he is an alcoholic and is very mean and inconsiderate when he starts drinking, he is also the type that has to always be right, we can literally be talking about the same thing but somehow my point of view is wrong because it doesn’t match what he imagined, so of course instead of getting into a big fight I just agree. However, this last time he was drinking we were just hanging out in our room watching some old Star Wars clips when all of a sudden he turns to me and says “do you grind and kiss guys at your raves?” Yes, I do go to raves and he knows this, we have talked many times about this and he said that he was ok with me going seeing as he knows my group of friends and that he never wants to come with me. No, I have never hooked up with a guy or danced on a guy while at a rave, especially if I’m taken, which we have also talked about before. So I reassure him that nothing happened....he pauses and then he says “are you sure?” At this point I’m super confused and I’m like “yes, I promise you that’s never happened...why?” He then looks at me and is like “I believe you, but I don’t” now I’m mad, yes I understand the insecurities but like I said we have talked about this before! So I ask him why has he brought it up, his answer? “Well it was bugging me a year ago so I thought I would ask” soooo...you have been holding onto these feelings this whole time and now you decide to tell me..even tho we had already talked about this and you were fine before? And the. He starts making ME feel bad! He said “we’ll see now this is why I can’t things, how else am I supposed to feel when you go to these things?!” So your telling me that for the 5 years we have been together that the entire time you didn’t like me going to these events, but never once said anything until now? I’m sorry but am I in the wrong for this?? I feel so hurt that he doesn’t trust me, especially since he knows everything that I do. I’m not sure if it’s just the alcohol talking or if he actually feels this way. Of course if I ask him he will say he doesn’t remember anything, which is probably true but still....I feel so lost now.