Promise ringšŸ˜©

So my boyfriend and I have been dating for 9months. I love him with all of my heart. He got me a promise ring and matching earrings a few days ago and I am in love with it. My only ļæ¼ dilemma is that I am 19 he is 21 my parents are strict. Itā€™s sooo annoying and Iā€™m ready for them to let me go. I havenā€™t told my mom yet in fear of how she will react. Any advice?? And yes I know it looks like and engagement ring. Any tips, advise, or anything? Also yes he made me the crossā¤ļø