My boyfriend hurts me emotionally

I need to talks to somebody...
I am in a relationship with my boyfriend for a year now... I fell in love with him because he was a sweet, kind guy, no games, no ****... Just being himself. But he hurts me emotionally, i am sensitive, but not a cry baby like he tells me. I am the overthinking kind of person. He is not. I like to talks about our problems, he does not. I am not really jealous, he is a lot. He puts me down always, where ever i go without him, i have to text him nonstop. He usually just says: "i think you are flirting with other guys right now, you always hurt me so much." even tho i am the girl that sits on the table and always looks in her phone because i have to text my boyfriend. But then, when we are with mutual friends, he provokes me in front of them. Once a guy yelled at me for leaving earlier a party in the woods ( i said to everybody i am going to leave a bit earlier, but that guy didn't hear me, and he started screaming at me in the middle of the woods, my boyfriend was with him, and he just let it happen... Then they turned away from me and said: " come on, just leave her, she is an idiot" i cried and then they yelled at me for crying. I do hate crying, but sometimes i just cant hold the tear back, i try my best, i try to hide it, but my eyes get red easaly and people just see it. In the beginning of the relationship, my boyfriend even flirtet with his ex in front of everybody and me, and he took her home alone even tho he said he wants US ( him and me) to take her home together and then go to his place... But then we had a fight because he flirted with her, and THEY (his ex and him) dropped ME off at home and went away together. He asked me casually before dropping me of: "so do you want to come with US (him and her) i mean... you dont have to" and before i got to say anything he just stopped the car in front of my house and said: "ok bye, see you"... i know its a small thing, but i was even in the BACK SEAT OF THE DARN CAR. He always says he loves me, and sometimes i even feel loved, but then **** like this happens and it is an action that matters more than words to me. I broke up with him that time, and he got so drunk that he went to a few of our mutual friends and told them his " angel like side of the story" so again, they believed him. When i say mutual friends, i mean: i hang out with them but they are his friends actually. THey are sometimes on my side, but all of them are guys, and they stick together. So i am the idiot in the relationship in their eyes, and that hurts a lot because they dont know how i feel and how it feels to say thing like: " you are a shitty girlfriend to him, its going to be your loss if you hurt him, he is a good guy" Yes, okay he is a good guy, he is a good friend to them, but he is no friend to me. ANd i love him still, why?? We got back together and broke up a few times... Yesterday we had a picknick in the woods, my neighbor( i have known him since we were very little), his girlfriend, my boyfriend and me... And we started a talk about a guy from our village, who was something like my ex but not really... ( I started hanging out with all those people 2 years ago, and it started when i hooked up with a guy named XX on new year, i have also known that guy for years, and we kissed a few years ago when i was about 15 but it ended with that. SO now i kinda started to like him and i made the mistake for sleeping with him after a week. In my defense he was a good lier and very charming... but then again i was an idiot who started catching feelings. That guy had a "girlfriend" while i was with him, i did not know that, but everybody else did, even my boyfriend i am with now... but nobody told me... That **** ended after 2 months or so, but i still did not know about the girlfriend, he just told me i am not his tipe after all) So however, when we started talking about that guy, i said how much of an idiot i was for liking him at the time, and my neighbour said: " oh come on, dont be hard on yourself, you did not know, everybody makes mistakes, get over it, it happened and it is over" But then my boyfriend ( a bit drunk) yelled: "oh SHUT UP she is AN IDIOT, stop defending her!" and i said that i really did not know what i was getting myself into, and that i do feel sorry for what happened but i cant change it. SO my smart boyfriend said: " oh but that's not the only problem" and i said: " what is the problem?" his answer was: " the problem is that you FU*KED HIM AFTER 5 DAYS" ........ everybody looked at me because nobody knew that i told that to my boyfriend once in confidence... i felt so humiliated and stupid, so again, my eyes got read, and i just walked away, so that nobody sees it, but he yelled: "OH WHY DO YOU CRY NOW??!" ..... Just the fact that he does **** to me like this, and does not realize how rude it is, just makes me mad.... He never tries to calm me down after it either... i walked away and he started laughing about some jokes my neighbour said ( and just to explain, those two are best friends) After i came back he said that i am only 20 and slept with 5 people already and that he is ashamed of me for it... I feel like ****. i don't know what to do.