My [25F] fiance [28M] got really drunk at his friends wedding and said he doesnt need me and wants to call off the wedding

TLDR: my fiance got wasted (normally doesnt drink) at a friends wedding, got triggered and went off saying how he doesnt need me anymore and wants to call off the wedding
I am using a throwaway account as I don't know what to think about all of this.
I am recently engaged and he proposed to me about a month. We have already hired a wedding planner and have put down the deposit for the wedding venue for August 2019. We have been together for about 4 years and our first year was very rocky. We had broke up for 1 week and got back together because we did not agree with each other and would always bring up each others past. He would always praise his last FWB and ask me why i wouldn't be like her and he would always put her above me. We broke up but then he actually came back to me asking for another chance and ever since then, I took him back and we have been pretty smooth sailing since.
Yesterday, we attended a wedding and he was a groomsmen and part of the wedding party and I was his plus one and I did not know anyone else at the wedding. But I did try my best to make friends with the people at my table and did not need him for most of the time. At the very end, people started to leave and he probably at least took around 10+ shots at this point, mixing liquor and wine and they were all taking shots at the open bar and then he left me at the dinner table by myself to go outside to the photobooth with the others. The important thing to note is that he does not drink this much often. The last time he did this was probably before he met me, over 4 years ago. I got upset because he could have invited me out with them to the photobooth rather than leaving me by myself, when i already did not know anyone as my table friends left the wedding already. I later went outside and sat next to the photobooth and he realized I was upset. He sat next to me and couldnt comprehend why I was upset at him after i had explained to him and all I wanted was an apology and thats it, we could move forward. But instead, he was suddenly triggered and he said he was so sick of me and that he doesnt want to marry me anymore and kept repeating himself over and over again. The groom, groomsmen and other friends had to stop him from saying so many hurtful words and told me that I shouldnt stick around to hear it because he really doesnt mean it.
The bridesmaids, who i did not know, were all very kind and told me that I should just leave the venue without him because he definitely was not the person he was in the afternoon when he was sober. Everyone had said he spoke the world of me and constantly said i'm the best girl ever. I said bye to the bride and groom and he clapped as I walked out. He ended up taking the cab home as I was originally his ride home.
At this point, he has not messaged me at all. I dont know what to think, or feel. But I do remember he said he used to blackout drunk before he met me. I'm not used to dealing with people who drink that much so i'm not sure if I can move forward with the wedding with or without an apology.


Source.