Parents v.s. Crushes

My parents and brother just can't get over the face that I might actually have a crush like what. My dad saw somthing written on my arm then I erased it then he got all defensive like OH what was that on your arm, why did u erase it??? Then my brother had to jump in and get all annoying and start shouting out my guy friends names. It's really annoying sometimes. Idk how to tell them that it's normal for someone to like someone like 🤔😶😑😐 wut??? Help plz