family camping trip

So me and my family are going on a camping trip and I'm taking along my boyfriend. I'm 21 and he's 19. We have bought everything necessary including a tent for us two. My parents just asked where I was sleeping I said with my boyfriend as planned, they immediately said NO ABSOLUTELY NOT! I don't know what to do now. Are they right in saying no or is it just me and they doing to much? 😡