I feel like shit🤦🏽‍♀️

My parents are very religious. They are Christians and I have grown up going to church a lot. I’m am going to turn 16 soon and they are throwing me a sweet 16 and I’m pretty sure they are going to get me a promise ring. Which is just me promising to save myself until marriage. The thing is.. I’m not like an atheist or anything I just dnt feel like I’m Christian. There are just some things I dnt agree with one of them being the whole sex thing. But I just dnt want them to get me a promise ring when I know I might break the promise. I know That’s they expect so much more from me and they think I’m a true and strong Christian when really I don’t know. I’m scared to talk to them because I know they will be upset. This is also the reason I have yet to be baptized 🤦🏽‍♀️ and every time they bring it up I just kinda say what they want to hear. What should I do?