So me and my s.o. are 15 years apart, he’s 33 with a 10 year old and I’m 18.

I’m at the point to where I don’t care but I haven’t told my family how old he is, they know about him and think it’s great but I know once they find out an age they will freak out, I want to know how to break the news and more advice on how to go about our relationship, we personally don’t care but at the same time want our families in our lives and are afraid that they will not want to be! Also I need any other advice if you have that as well not just about family matters!