Asexual????

i really feel like i could be.
i've been with my SO for nearly 5 years, but i'm perfectly content with cuddling/talking/no other physical contact. i never think about sex or really get turned on. 
while we're doing it, i enjoy it, but i never initiate the making out/sex. it's always him. i just don't crave it. however, i used to crave it the first year or so? i've been confused about it for a while
now..
any advice/comments? 
🙁