Okay, so my boyfriend and I started dating when I was 13 and I'm almost 18 now so that's a little over 4 years, and because we started so young my parents didn't take it seriously or anything but his parents were really intense and always asking me to family function which my parents thought was a little too weird because I was only 15 at the time. As we got older we started fighting over things and his main complaint was that my parents didn't like him (even though they did) and that they didn't accept him into our family, but he didn't realise that my family does things differently. Anyway a few months ago we had a big fight and we broke up and I was really upset and crying and my parents were really annoyed, the next day I spoke to him and we got back together and he said sorry blah blah blah but then when I tried to tell my parents they said your not getting back together until after your exams, so I said okay ( even though we were together still ) now it's been almost 6 months since we 'broke up' and in getting pretty anxious about telling them were together because my mum keeps on saying how much she hates him now and that I could do so much better, and I don't think she understands that people fight and break up and get back together sometimes. I don't know what to do, should I just wait until I get my license and say well were back together and you can't stop us seeing each other or something else? I really don't know what to do. My boyfriend is a great guy but just made one mistake so please help me out:) sorry for the massive essay but it's just a really long and annoying story, but thanks for any help :)

When you are gone from the house your parents pay for, and the food they buy, and you have your license and a car and a job and an apartment, then do what you want. Until they stop supporting you, you have to do what they say.

You don't say what his mistake was - somewhere between being mean to you and murdering 50 people? At the beginning of your paragraph your parents liked him, and now they hate him and think you can do better (ugh, don't parents realize that's the worst thing to say)?

I guess your right but I don't really want to wait 4 years until I finish university lol
And the mistake was him breaking up with me and yep they really do haha

This is going to sound callous and jaded (I'm old) but I suspect that your fighting with him is just a harbinger of what's to come - you've outgrown each other. So my advice is to go to uni and don't ruin your chances with all that your parents represent, including the very mercenary things.

No couples do not really "fight" and break up. They may disagree and make up. And if your parents see this more and more, and getting worst. Could they see something you don't.
Normally outsiders see the problems that people refuse to see since they call it love.

They saw you hurt time and time again and don't want it to happen again with him.

Please, please give this some time. Don't talk about your boyfriend in front of your parents. Let everything kind of take a rest. I am 70yrs old, widower, and know that families sometimes don't like spouses, boyfriend, girlfriend, etc. Remember the old, old saying: If you marry someone, you are also marrying their family. This is true, unless you move about 3000 miles away from them!
Don't do anything now, and wait for some time. Things might get better. I wish you the best.