Boyfriend problems

My boyfriend and I have been dating over two years now. He is 18 turning 19 in two weeks and I'm 19 turning 20 in three. I feel like I have to walk on egg shells with him. He is very argumentative and it's annoying. He is also a hypocrite and expects me not to do something but he does it himself. Also, he always finds a way to accuse me of being more wrong in the situation. I always end up apologizing even when it's his fault because I get sick of fighting. He's very flirtatious towards other girls from what I've heard from even one of his friends. It makes me feel insecure whenever we are apart because I think about the way he's talking to these girls. He's never physically cheated, but he does flirt. I love him and I know he loves me. He's put up with a lot from me as well. I want this relationship to work, but I feel like we are constantly bickering. I barely hang out with my friends anymore or go out to social events such as parties because he will freak out. I can understand the party thing, but he even gets upset when I drink with my girl friends or even at my sisters wedding. He's conservative, argumentative and hypocritical. He does love me & proves it, but I'm so sick of him always making me more wrong even when I'm not. I love him and don't wanna lose him, he's my best friend and we've been through a lot together. I also couldn't stand to see him with someone else, it would kill me. We also don't really have romance in our relationship. He claims to miss me when we are apart but as soon as he sees me he just says "babyyyy!" And continues doing whatever he was doing. I am just confused on what to do. Don't get me wrong, we have good times together and he does make me happy, but it also feels like we argue and bicker every day.