Long term teen relationships.

So this is something that's been bothering me for a while now. I'm 18 nearly 19 and I've been on and off with my current boyfriend who's 19 since I was 13 and he was 14 so that's a good few years right and through those years he treat me real bad at the start and our proper relationship didn't start until 2015 and were still together now I was 16. He's the guy I lost my virginity to, he's my first and only proper relationship, he's been the only thing I've really ever known and I can't see myself without him BUT these last few weeks I've noticed I'm not living as I should. I feel tied down, I can't go on a night out with my friends because it'll interfere with my boyfriends and our nights together. I haven't moved on with my life i can't see my friends that often as I'm busy in the week and then the weekends I'm spending watching films in bed with him. I feel like I shouldn't be like this at this age and i love him to pieces I want to marry him but I know I'm Not living as an 18 year old girl should live. I can't wear certain clothes because he gets mad if my cleavage is present or a skirt is 'too short' and he don't plan to propose to me for a 'very long time' as he put it. And he's been talking about moving out together and having children and I'm freaking out I should be in uni or college sharing a crappy flat with my best friend or something but I cant imagine leaving him because I am in love with him, crazily CRAZILY but this is getting boring we don't do anything together anymore it's literally how a night goes; me sat on my phone whilst he plays on his computer or we watch a film and I see all over social media all my friends partying and doing stuff together and I'm nearly 19 and iveonly been clubbing ONCE with my boyfriend for his friends birthday and That ended In a argument as he thought I was speaking to another guy when I wasn't. Please I need some advice before I go crazy what shall I do ? I love him so much but I feel like I need to get out there you know ?