Do I tell him?

I’ve been with my guy for a year. We’re young, this is my first relationship. But I’m in love with him. I’m so in love with him that it makes my heart hurt. He’s so beautiful inside and out and he’s so precious and sweet and caring and his laugh makes me melt and his eyes are to die for and his smile is just... I could go on for hours. I’m so in love with him. I can feel it in every inch of my body. Do I tell him? I don’t want to scare him off