HELP! FAMILY/RELATIONSHIP PROBLEMS

Okay so I am 17 years old, I've been with my boyfriend for 3 1/2 years now (since middle school 12 years old) I know we were really young but anyways I feel like now I'm old enough to make my own decisions I'm soon to be 18 and it's just frustrating how we're babied so much! My boyfriend and I aren't allowed to go out on dates anywhere and we can't even kiss in front of anyone not even a little pop kiss! All we do is sit on the couch and be observed all day! It's so annoying I am stressed about this because I love him so much and I wanna prove it, I know how to be careful AND prevent pregnancy I know all the diseases and I'm aware but NO ONE UNDERSTANDS what do I do?? Am I overreacting??