What if I don't like going out with his mates?

Well I’ve been with this boy for a week and sum days, and friday he took me to the pieamear, and he was showin me all his mates, and there was loads, lke 40 of them and he kept tellin me to talk to some of them and me and my materach were bored at the pieapearr and wanted to go and we told my boyfriend and he was like okay if you really want to go I’ll come with you then he kept makin up excuses like be back in a min what was really like 10m and then he kept sayin we cant go out yet because people still wana to come in…witch was a lie soo we said we go and he made us go on our own and he didnt even hug me goodbye and we was standin around in the cold all night for like 3 hours :| so me an dmy mate decided to get pissed… and den we all sleept round kiine witch was ok and then the next day I decided to go town miff my boyfriend because I sed I whud go to meet sum more of his mates and there was like another 50 of them and because id ont really know anyone there my boyfriend kept leavin me to go over and talk to another lot of people, and he kept tellin me to talk to some people and I dont really know who or what to talk about.? but as we wass walkin there he was like I knw 2 people hu fdancey me…and that is me and some other girl hu hangs around wit him… and he sed that if she wanted to go out with him that she shud of asked earlier before he was going out with mee.. and that not a sort of thing to say to yur own girlfriend? I Love him to bit I just dont like bein around his mates :| I dont really know what to do anymore im really confussed :|