Help! Boyfriend problems!

So me and my bf haven’t really been talking since Thursday we texted a little but it wasn’t much and so Friday came and we texted and all that and after he was done with work he told me to come over so we can hang out and when I got there we just laid in his bed and watched Netflix and then we went to the bank to put his money in and after that he told me that some of his friends were coming earlier and I said ok (he had posted on his snapchat that he was having a party) then he said if you can leave whenever you want if you start to feel uncomfortable and I asked him why would i start to feel uncomfortable and he said because it’s going to be like 30 guys and one girl so when we got back to his house i told him I was just going to leave because it didnt seem like he wanted me there and we were leaving I gave him a hug and he was like we can plan something tomorrow and i said we’ll see so when i said that I can tell he got a little mad and then I just left and a little later he texted me saying are you mad and i just responded with it doesnt matter because it’s not going to change so just go have fun and enjoy your night so then he replied with so you are mad and I just didn’t say anything. And I go on my snapchat and I see that this guy posted (my bfs friend) that his gf was there and her friends and all these other girls. So I texted him that he lied to me and then he said that he didn’t know and we got into this huge argument. And i knew that he didn’t want me at his part Idk why but it just hurt i wasn’t mad that he was hanging out with his friends it just hurt because it seemed like he lied to me and he didn’t want me there it just hurt so much. The next day he didn’t text me and I didn’t either but through out the day he snapchated me. So later that night I asked him if I can come over so we can talk and he said about and I said about last night and then he replied with there is nothing to talk about and I said maybe you don’t have anything to say but I do so then he was like ok just tell me then and i didn’t want to ralk about this whole thing I’ve text that’s just dumb and i told him that and then he responded with ok so you want to come over to talk to me about how i made you feel bad no thanks and I replied with that’s not all because it wasn’t all an the he was like I am just trying to relax and enjoy my day. I started crying just because it hurt a lot and then he texted me he wanted s break I said ok I’ll give you a break and then he was like but I am serious though and I said ok and then he replies with don’t think it’s the end of the world and when he said that I got really mad so I just replied with i know and then said stay positive ok? And I said alright. The fact that he said that time really pissed me off like he thinks i ca t live with out him but at the same time I didn’t want to break up i truly love him and we’ve been dating for almost a year it’s November and it was going to be a year in December 1st. I am really hurt and I just don’t kniw what to do. When he said that I was really mad but I am also very sad because I really love him and I just don’t want things to end we haven’t texted at all since Saturday and it Monday it just really hurts. So i just wa t some help on what i should do. Also that night I had noticed he looked at this girl on Instagram that was at his party ( he was using my Instagram on hi phone so I saw the recent) and then he logged out of mine and logged on his because he posted pictures and I went on that girl profile and he had liked some of her photos so I wonder if thats why he wants a break. Idk what to do ireally want him back but at the same time what person says that “don’t think its the end of the world” I am just really conflicted. Someone please help! Sorry its very long