Sexual attraction or the lack of it doesn't indicate whether or not a person's body can be sexually active. Some asexuals may enjoy the act of sex and the sensations or the particular sort of intimacy it initiates and not be sexually attracted to their partner(s).
Asexuality. This post going round last October during asexual awareness week is the reason I discovered I'm grey-ace. And from there I've discover that I'm also grey-aro and have a place in this community. I owe a lot to this little dinosaur. Thanks lil guy! X