should i tell him

So I am 15 years old, I live with my dad my mom left when i was young, i have older siblings but they dont live with us. i consider me and my dad pretty close for a dad & teenage daughter. 2 years ago (i was 13) we somehow started talking about he would want me to tell him when i lost my virginity. he said that obviously it doesnt matter if im an adult but if i lose it in my teen years which he predicted i would, he would want me to tell him. he said he would not react in anger he just wants to be there to help if i needed it since i dont have a mom to depend on. I lost my virginity a week ago, im not pregnant i used protection, and everything went okay. Should I tell him? its not something i desire to tell him or want to talk about with him.